Lungs: What they are, how they work?

 Lungs: What they are, how they work?

Damage to the lungs from minor infections or injuries can heal on their own, but damage from smoking, pollution, or chronic diseases can be permanent.

The lungs are the main part of our respiratory system and work to deliver oxygen to the body and remove carbon dioxide.

How many times do you breathe in a minute? In seconds? Have you ever counted? How long can you live without taking a breath? Have you ever wondered about this?

Because breathing in and out is an automatic process, for which you do not have to make any extra effort. But, what happens if that breath suddenly stops? You certainly have the answer.

Not only is it essential for life, but the lungs play a major role in taking in and releasing oxygen, which is needed every moment.

The lungs, which are soft, sponge-like structures inside the chest, supply the body with oxygen and energy and remove toxic carbon dioxide.

What role do the lungs play in the continuous process from taking in oxygen to taking out carbon dioxide? Why are two lungs necessary? How much damage does smoking cause?

What is the function of the lungs and what is their structure?

The lungs are the main organs of our respiratory system. They are made of soft, flexible tissue like a sponge and are located inside the chest around the heart. The lungs have a thin membrane on the outside that protects them. They are divided into two parts: the right lung has three parts: ‘upper, middle and lower’. The left lung has two parts: ‘upper and lower’. The left lung is slightly smaller because the heart occupies more space on the left.

The respiratory system begins with the nose or mouth. Air enters the trachea through the throat. It is then divided into two parts. The air we inhale enters the right and left lungs separately. After reaching the lungs, the bronchi divide 23 times like the branches of a tree, reaching the smallest tubes and ending at the ‘alveoli’ (air sacs).

The alveoli are thin membranous tissues like grape clusters, around which the blood vessels coming from the heart are spread like a spider web. An adult has 300 million to 600 million alveoli.

If the lungs are fully expanded, their surface area is 70-100 square meters, the size of a tennis court. The lung weighs 1 to 1.2 kilograms. The right one is slightly larger and heavier. The lung is the only organ in the body that can float in water, because it is always full of air. Even after breathing out completely, about 1 liter of air remains in it.

What is its main function?

The main function of the lungs is to supply oxygen to the body and remove carbon dioxide, which is called gas exchange. This is possible due to the thin membrane between the alveoli and the blood vessels.

Oxygen is absorbed from the air coming from outside and enters the circulatory system and reaches various cells of the body to provide energy. Similarly, carbon dioxide, a toxic gas produced by the body's organs, enters the alveoli through the blood vessels and is released when we exhale. This process continues continuously. The lungs also filter the air, which protects the body from infection.

It produces phlegm, which traps dust, germs, and pollutants and expels them when we cough them up. We breathe 8,000 to 9,000 liters of air every day, but the body uses only 5 percent of the oxygen from this air. The lungs are closely connected to the heart, so heart problems can also affect the lungs.

Why do humans have two lungs? What happens if one lung fails?

The main reason for having two lungs is for the body’s balance and safety. Both lungs work separately but support each other. If one lung develops a problem, such as cancer or infection, the other one takes over, which can help save lives. This makes it easier for the heart and other organs to function together.

Even if one lung is completely removed, a person can still survive, but not at full capacity. The failed lung can cause problems such as infection, blistering, or bleeding, and the infection can spread to the other lung because there is no barrier between the two.

Pollution or other external factors affect both equally, but some diseases can affect only one side. If a failed lung causes a lot of problems, it may need to be surgically removed.

How do the lungs take in and expel air?

The process of taking in air is called respiration, which consists of two stages – ‘inhalation’, which is the process of drawing air in, and ‘exhalation’, which is the process of expelling air out. This process is controlled by the brain and occurs 12-20 times per minute.

During inhalation, air from the nose or mouth passes through the throat, trachea, bronchi, and small tubes in the lungs, and then reaches the alveoli. The diaphragm muscle moves down, increasing the space in the chest, which draws air in. About half a liter of air is taken in with each breath.

During exhalation, the diaphragm moves up, the chest narrows, and air is expelled from the lungs. This process is also called ventilation. It is affected in chronic lung diseases, which are called respiratory failure. Sudden problems such as food getting stuck in the airway or tumors can also affect it.

Is there a chance of recovery if the lungs are damaged? How does smoking affect this?

The likelihood of lung damage depends on the type and extent of damage. The lungs have some ability to regenerate. They can heal themselves from minor infections or injuries, such as damage from the flu or pneumonia, which can be treated and cured with time and rest. However, serious damage caused by smoking, pollution, or chronic diseases such as COPD, fibrosis, or cancer can be permanent and may not fully recover. In such cases, medical treatment, medication, or surgery may be necessary.

Smoking is harmful to the lungs. It damages the fine hairs and membranes of the airways, which makes it easier for dust, smoke, or viruses to enter the lungs. This increases the risk of pneumonia or other infections. Smokers' lungs become black/brown, inflamed, and damaged. However, quitting smoking has a positive effect on the lungs. The lungs have various defense mechanisms, such as nasal hairs, which are damaged by smoking but largely repaired after quitting.

Although not completely restored, the risk of infection is reduced and health improves. Quitting smoking is beneficial at any age, even up to 90 years. A healthy lifestyle, exercise, and avoiding pollution increase the chances of recovery, but this depends on individual health. If there is a problem, it is best to consult a doctor.

What are the main problems that occur in the lungs? And how to maintain lung health?

Immediate problems in the lungs such as colds, coughs, nasal congestion, sore throat, fever, chest pain, and problems with the airways that cause coughing or wheezing. In the long term, pneumonia, lung infections, asthma, pulmonary fibrosis, and lung cancer are the main ones. Lung infections, asthma, and cancer are more common in Nepal. As diseases like asthma increase, lung capacity decreases, which affects daily life.

Lung health depends on daily air quality, diet and lifestyle. Healthy lungs are pink in color. To keep them healthy, you should quit smoking completely, exercise regularly, which increases lung capacity.

Wear a mask to avoid pollution, breathe clean air, eat a balanced diet and drink enough water. If you have difficulty breathing, cough or chest pain, you should immediately get checked by a doctor. Since the lungs are connected to the heart and other organs, it is necessary to pay attention to overall health.

What is sodium? Both too little and too much are harmful

 What is sodium? Both too little and too much are harmful

To control sodium, try to consume less than 2 grams of salt per day, which is about a teaspoon.

What is sodium? Both too little and too much are harmful

Sodium is a part of salt and is necessary for the normal functioning of the body's cells, nerves, muscles, and heart.

Consuming more than 2 grams of sodium per day can cause high blood pressure and long-term heart problems.

The salt we eat daily is not only related to the taste of our food, but also to the balance of the body, heart health, and quality of life. Both conditions of sodium deficiency and excess can cause serious health problems.

A conversation with cardiologist Dr. Rajendra Koju on what sodium is, why the body needs it, how much is safe, and what risks arise when it is too much:

What is sodium and why is it needed by the body?

Sodium is the scientific name. In simple terms, it is a part of salt. It is a mineral element. We eat it every day and it is one of the most important minerals for our body.

Without sodium, the body's cells, nerves, muscles and heart cannot function normally. It is essential for water balance, blood pressure, signal transmission and muscle function. But too much sodium can cause high blood pressure and heart problems, so it is important to keep it in the right amount.

What happens in the body when there is a lack of sodium?

Sodium keeps our body in good balance. It is found in the blood, muscles, cells and other parts of the body. Most of it is in the blood. Without this mineral, cells cannot function. Muscles, the heart and the brain all need it. If it is less than the required amount, it has a negative effect on the body.

Due to its deficiency, muscles cannot function, the nervous system is affected, and problems occur in the heart and other organs. This is called hyponatremia. It must be kept in the required amount. About 500 milligrams of sodium is needed every day, but it is recommended that the amount of salt should not exceed 2.3 grams. This 2.3 grams is not even equal to a teaspoon.

Is sodium only in salt or is it also found in other foods?

Foods like green vegetables, fruits, milk, yogurt, cheese, fish, meat, and eggs contain sodium even if they are not salted, but the amount is less.

It is difficult to say exactly how much salt to eat daily, but it can be estimated in these ways. The World Health Organization recommends less than 2 grams of sodium per day for adults. This is approximately the same as a teaspoon of salt.

Sodium is found not only in salt, but also in foods added to food and vegetables. The added sodium should not exceed 2.3 grams. A teaspoon can be used when measuring. For example, a teaspoon of salt is enough to cook vegetables for four people. Generally, it is okay to eat only one teaspoon of salt per day.

What happens when you have too much sodium?

Too much sodium has various negative effects on the body. Because sodium attracts water. When there is too much sodium, the body retains water, blood volume increases, and pressure in the blood vessels increases. The biggest problem caused by this is high blood pressure, which causes long-term damage to the heart, brain, kidneys, etc.

What are the symptoms of sodium deficiency or excess?

When there is a deficiency (hyponatremia) or excess (hypernatremia) of sodium, various symptoms appear in the body, which are mainly due to the effects on the brain and nervous system.

Sodium deficiency occurs when the blood sodium level is 135 milliequivalents per liter.

The main symptoms are headache, nausea or vomiting, fatigue or weakness, muscle weakness, cramps, confusion or dizziness, irritability or low blood pressure, dizziness, fainting, or a person may go into a coma.

When sodium is high, ‘sodium 145 milliequivalents per liter in the blood’

When sodium is high, problems such as excessive thirst, feeling tired or lethargic, dizziness or confusion, irritability, muscle twitching or cramps, dry mouth and skin, and rapid heartbeat may occur.

You can predict these symptoms at home. If you experience problems such as headache, fatigue, confusion, cramps, or fainting, you should go to the doctor immediately. These symptoms can also be associated with other diseases. But the most accurate and reliable way is to check the amount of sodium in the blood by doing a blood test.

How does sodium affect heart health?

Excess sodium affects the heart in two main ways. First, it causes high blood pressure and puts extra pressure on the heart and blood vessels. Second, as blood volume increases, the heart has to pump more blood, which can cause the muscle in the left lower chamber of the heart (ventricle) to thicken or enlarge, a condition called ‘left ventricular hypertrophy’, or increase the risk of heart failure.

In addition, excess sodium activates the sympathetic nervous system, weakens the inner lining of blood vessels, and increases inflammation, which further damages the heart and blood vessels. The effects are more severe in people with high blood pressure or heart disease, as it increases the accumulation of excess fluid in the body, putting an additional burden on the heart.

How to control sodium?

-To control sodium, try to keep your daily intake below 2 grams, which is about 5 grams of salt per day.

-You should cook more fresh food at home. Processed/packaged foods such as chips, noodles, sausages, bread, soy sauce, etc. should be reduced as much as possible. Salt should be kept to a minimum while cooking and eating.

-You should check the sodium content of packaged foods by looking at the label and choose low-sodium options.

-You should eat more potassium-rich foods such as fruits, vegetables, and yogurt. This reduces the negative effects of sodium.

Children may be deficient in vitamin D in winter, what to do?

 Children may be deficient in vitamin D in winter, what to do?

Sunlight is the best natural source to compensate for the problem of vitamin D deficiency.

Children may be deficient in vitamin D in winter, what to do?

Vitamin D helps strengthen children's bones and teeth, helps in height growth, and increases their ability to fight disease.

Children are deficient in vitamin D due to less exposure to sunlight in winter, wearing thick clothes, and not taking them outside much.

Vitamin D is an essential nutrient for the healthy development of children. Vitamin D strengthens children's bones and teeth, helps in height growth, increases their ability to fight disease, and helps in muscle development.

According to the American Academy of Pediatrics, vitamin D deficiency can cause problems such as 'rickets', a softening of bones in children, which weakens bones. But vitamin D deficiency in children is seen due to less exposure to sunlight in winter, not taking children outside for a long time, and wearing thick clothes.

Parents need to know why children develop vitamin D deficiency during the winter, how to recognize it, and how to prevent and treat it.

Causes of vitamin D deficiency in newborns:

Vitamin D deficiency in newborns is often associated with pregnancy. The baby gets vitamin D from the mother while she is in the womb. If the mother does not spend enough time in the sun during pregnancy or is deficient in vitamin D, the baby can also be born with a deficiency. According to the Mayo Clinic, vitamin D deficiency in pregnant women increases the risk of rickets in the baby.

Although breast milk is the best food, it contains low levels of vitamin D. Therefore, exclusively breastfed babies may need vitamin D supplements.

In winter, if the baby is not exposed to the sun due to fear of cold, the skin cannot produce vitamin D. The body produces vitamin D from UVB rays, which are less in winter.

Babies born prematurely have low vitamin D stores in the body, which increases the risk of deficiency by 2-4 times.

Children with dark skin produce less vitamin D from the sun, and this problem is also more common in polluted areas.

Why is vitamin D deficiency more common in winter?

The main reasons for vitamin D deficiency in winter are:

- The sun's rays are shorter in winter.

- Morning and evening sunlight are not effective, because the 'UVB' rays are weaker.

- The child's body is covered with thick clothes, which blocks the skin from the sun.

- Especially in cold weather, children play less outside.

- Fog and pollution block the sun, which reduces UVB rays.

For all these reasons, the child's skin cannot produce enough vitamin D. Vitamin D deficiency weakens the immune system, which leads to frequent infections.

Symptoms of vitamin D deficiency

The symptoms of vitamin D deficiency vary according to age.

In newborns and young infants: from birth to 12 months

- Excessive crying, irritability.

-Low milk intake or loss of appetite.

-Slowness in lying down, sitting up or crawling - 'delayed motor development'.

-Soft skull bones.

-Excessive sweating, especially on the head, even at a young age.

-Vitamin D deficiency causes fatigue and weak bones.

In older children: above 1 year

-Leg pain or fatigue.

-Fatigue or muscle weakness when walking.

-Bold legs.

-Frequent illness, such as respiratory infections.

-Height and weight not growing as expected.

Treatment and prevention of vitamin D deficiency

The sun is the best natural source to replenish vitamin D deficiency. Therefore, you should expose your hands, feet or face to the sun for at least 3-4 days a week, for 15-30 minutes.

Newborns can be given vitamin D drops as recommended by a doctor. Do not increase the amount yourself, as excessive amounts can cause problems.

Foods rich in vitamin D can be given after 6 months.

-Egg yolk

-Milk yogurt, ghee in small quantities

-Sun-dried mushrooms

Vitamin D deficiency can be prevented with these foods. Salmon and eggs are also suitable for pregnant women.

Tips for parents:

-Mothers should take vitamin D daily during pregnancy. For that, they should pay attention to sunlight and nutrition.

-The baby should be safely exposed to sunlight regularly, but sunburn should be avoided.

-Vitamin D drops can be given to babies who are exclusively breastfed on the advice of a doctor.

-The child's development should be monitored regularly, such as height, weight and motor skills.

-If there is any doubt, a health worker should be consulted.

By adopting these measures, children's vitamin D levels can be maintained even in winter, which improves their overall health.

Prashant Tamang's death due to 'cardiac arrest', what is this problem?

Prashant Tamang's death due to 'cardiac arrest', what is this problem?

In our society, cardiac arrest and heart attack are considered as one problem. But from a medical point of view, these two are completely different problems.

Singer and actor Prashant Tamang passed away at the age of 42 due to cardiac arrest at his residence in Delhi.

Cardiac arrest is a sudden cardiac arrest that can lead to death within 3 to 5 minutes.

The number of cardiac arrests among young people in Nepal is increasing and modern lifestyle, stress, and lack of sleep are the main reasons. 

Kathmandu. There was once a very popular name in the music world - Prashant Tamang.

Tamang, a Nepalese resident of Darjeeling, is the winner of Indian Idol Season 3. In 2007, his voice and personality won the hearts of Nepali and Indian audiences.

In recent years, he seemed to be more busy with films than singing. And recently he made his debut in Bollywood. Along with singing and acting, his simple lifestyle made him an inspiration to many youngsters. But that inspiring character suddenly left this world at the age of 42. The reason was, 'cardiac arrest'.

In the last few years, not only in Nepal, but all over the world, news such as 'He fell and died while walking', 'He died while sleeping', 'Young people who were going to the gym suddenly fainted and could not survive' are increasing rapidly.

In the last few years, not only in Nepal, but all over the world, there are many news such as 'he died while walking', 'he died while sleeping', 'the young man who was exercising suddenly fainted, he could not escape', he fell while talking'.

Sudden death like this is often thought of as a heart attack, but medical science has shown that the reality is different. Doctors say that the real reason for most of these incidents is 'cardiac arrest' i.e. sudden heart failure.

What is cardiac arrest?

Cardiac arrest is when the heart suddenly stops working. Senior Consultant Cardiologist Dr. According to Ranjit Kumar Sharma, the word cardiac refers to the heart and arrest means stopping or stopping. When the electrical system of the heart breaks down, the heart beats irregularly and the heart cannot pump blood, the condition is called cardiac arrest. Dr. Sharma is currently the head of cardiology department at Medicity Hospital.

How can it lead to death? In response, Dr. Sharma says, 'Heart is the most important pump of our body. It continuously carries blood with oxygen to all parts of the body. When a cardiac arrest occurs, the heart suddenly stops working. Its effects start to appear in the brain within a few seconds. The person suddenly faints, breathing stops and the supply of oxygen to the body stops. If the heart does not restart within 3 to 5 minutes, the brain is permanently damaged and death occurs.

Why does cardiac arrest happen?

Dr. According to Sharma, in most cases, heart attacks occur first. A heart attack damages the heart muscle, due to which the electrical system of the heart breaks down, leading to cardiac arrest. During a heart attack, a sudden blockage (clot) forms in the artery that supplies blood to the heart (coronary artery) or the artery is completely closed. This causes the electrical system (rhythm) of the heart to deteriorate due to insufficient blood and oxygen supply to the heart muscle.

After the rhythm is disturbed, the normal movement of the heart is disturbed, leading to dangerous conditions such as ventricular fibrillation or ventricular tachycardia. In this condition, the heart cannot pump blood effectively, the heart only 'vibrates', not pumping. Cardiac arrest in this way Dr. Sharma says.

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Therefore, if a heart attack is left untreated, it can turn into a cardiac arrest and cause death, he says.

He says that heart rhythm disturbance is another reason for cardiac arrest. "A heart attack, electrolyte imbalance, stress, medication, or congenital causes can cause the heart to beat very fast or irregularly," Dr. Sharma says, 'When the lower part of the heart starts beating very fast or irregularly, the heart cannot pump blood. It can knock down a person in a few seconds.

Cardiomyopathy (thickening of the heart muscle)

Virat Medical College Senior Cardiologist Dr. According to Madhav Bista, cardiomyopathy is the thickening of the heart wall. It makes the heart hard and does not allow blood to fill. This problem is mostly congenital and many are not aware of it. He says that the first symptom is sudden death.

"The most dangerous aspect is that congenital heart disease may be hidden in many young people," says Dr. Bisht. Even if a person with these diseases looks healthy on the outside, the risk of cardiac arrest increases due to sudden excessive stress, alcohol consumption, or physical fatigue.

Therefore, he suggests that young people should also get their heart health checked from time to time. Dr. Bisht says that it is wise not to do too much physical exercise at once and not to insist on alcohol.

Why is cardiac arrest increasing in young people?

In the last 10-15 years, the incidence of sudden cardiac arrest among young people is increasing rapidly all over the world. Nepal is also not exempt from this. The problem of cardiac arrest in Nepal is increasing alarmingly. Sharma says. First cardiac arrest It was considered to be a disease that occurs in 60-70 years, says Dr. Sharma, but now, even in the age group of 25 to 45 years, its number is increasing alarmingly.

According to him, the biggest reason for this is the modern lifestyle. The habit of sitting in front of mobile phones, laptops and screens for a long time has made the body inactive. When physical activity decreases, weight increases, cholesterol increases, blood pressure increases and the arteries of the heart narrow. He says that this situation will later cause heart attack and cardiac arrest.

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Cardiologist Dr. Stress and lack of sleep in today's youth is another main factor leading to cardiac arrest. Bisht says. Dr. Bisht says, "The habit of using mobile phones till 2-3 o'clock in the night, sleeping irregularly, and taking pressure from work makes the electrical system of the heart unbalanced. It causes cardiac arrest, heart attack."

Smoking, alcohol, energy drinks, junk food and processed food have become part of the daily life of the youth. Dr. They cause swelling of body parts, increase blood pressure and damage of arteries. Bista says.

Studies have confirmed that such incidents can happen even after drinking too much alcohol. According to a study published in the National Library of Medicine, excessive alcohol can cause heart rhythm disturbances, which can make the heart beat irregularly. Alcohol lowers blood pressure and causes electrolyte imbalance, which destabilizes the heart. Sleeping drunk also increases the risk of vomiting or respiratory arrest. Those with chronic heart disease or other health problems are at greater risk.

What is the difference between heart attack and cardiac arrest?

In our society, cardiac arrest and heart attack are considered as one problem. But from a medical point of view, these two problems are completely different. Sharma says.

A heart attack is a blockage of the coronary artery leading to the heart and the oxygen supply to the heart muscle is stopped. It damages a part of the heart. But a person who has a heart attack can speak, walk, reach the hospital,'' he says, 'but cardiac arrest is the stopping of the heart. In this condition, the heart cannot pump blood at all. The person immediately collapses, passes out and can die within a few minutes.

According to him, cardiac arrest is a more dangerous condition than heart attack because it has the danger of dying quickly. If CPR and defibrillator are not used immediately, chances of survival are very low. For this reason, defibrillators are placed in sports fields, gyms, airports, large department stores, malls, railway stations, offices, etc. around the world, says Sharma.

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"This device is easy to use and gives instructions by speaking," says Sharma, "If someone has a sudden cardiac arrest, anyone can use it to save their life."

What are the symptoms of cardiac arrest?

Cardiac arrest often comes without warning, but before that, the body has already started giving small signals. The problem is, many young people ignore those signs as fatigue or gastric. According to Dr. Sharma, chest pain, sudden increase in heart rate, difficulty in breathing, dizziness are some of its symptoms. Sometimes chest heaviness, burning sensation, pain in the back, neck or left arm can also be signs of a heart attack. Cardiac arrest can occur after a heart attack.

If a young person is experiencing the problem of frequent fainting, shortness of breath while running or climbing stairs, waking up at night while sleeping, then it should not be taken as normal, said Dr. Madhav Bista says. "That's not normal, it could be a sign of hidden heart disease," he says.

Sudden collapse, unresponsiveness, stopping breathing is a condition of cardiac arrest. At that time even a few seconds can be important. Bisht says.

Is it possible to treat patients with cardiac arrest?

Treatment of cardiac arrest is possible, but only within the first few minutes of hospital delivery. Dr. According to Ranjit Sharma, if a cardiac arrest occurs, the first treatment is cardiopulmonary resuscitation (CPR), not medicine. If the person can be rescued by giving CPR and being taken to the nearest hospital, the person can return to normal life. That is why it is called 'Basic Life Supporter'.

Dr. According to Ranjit Sharma, if a cardiac arrest occurs, the first treatment is cardiopulmonary resuscitation (CPR), not medicine. If the person can be rescued by giving CPR and being taken to the nearest hospital, the person can return to normal life. That is why it is called 'Basic Life Supporter'.

If a person suddenly collapses, CPR should be started immediately by chest compressions. He says that if the heart is not started within 3-5 minutes, the brain will be permanently destroyed and the person will die.

According to Dr. Bisht, people who survive cardiac arrest can be treated long-term with pacemaker, medicine or surgery after finding out the cause of the heart problem. He says that after such treatment, he will return to normal life if he pays attention to his lifestyle.

What is Alpha School in America, where AI teaches instead of teachers!

 What is Alpha School in America, where AI teaches instead of teachers!

What comes to mind when you think of ‘school’? Surely, for many, classrooms from kindergarten to 12th grade, front-line teachers, and long lessons come to mind. This is how schools have been set up for centuries. But now, as AI is changing our lifestyle, the traditional way of learning and schooling has also started to take a new form.

Alpha School, located in Texas, USA, has become a global sensation due to its unique and modern way of teaching students. Instead of a teacher teaching 25-40 students at a time as per the traditional style, it is said that in this school, students are instructed individually by AI guides. It is said that the AI ​​system also analyzes their progress and provides immediate feedback, which helps them improve their weaknesses.

At Alpha School, students are said to have to study for only 2 hours a day. According to international media, after two hours of study, Alpha School students spend time on physical activity, problem-solving activities, leadership exercises, and life skills. These include activities ranging from long bike rides to creative projects and entrepreneurship training.

Another feature of Alpha School is its financial rewards system. Students are said to earn money for completing assignments, projects, or mastering skills, which they can spend on their own projects or interests, or even invest.

According to international media, Alpha School is not a school that appeared overnight or became famous. It has been operating on campuses in Texas, Florida, and California for more than a decade, and is now preparing to expand to New York City. It is said that a new Alpha campus is planned to open in Manhattan next September, with annual tuition fees ranging from $40,000 to $65,000, depending on the location.

This unique and technological teaching style demonstrated by Alpha School has shown the potential for education to take on a completely new form through innovation, not just limited to books and teachers.

What are the procedures for postmortems and identification of those who died in the protests?

 What are the procedures for postmortems and identification of those who died in the protests?

Coordination between forensic science, police, and hospitals is necessary to identify and determine the cause of death of those who died during the protests.

An official letter of medico-legal examination from the police is required before the postmortem is conducted, which confirms the cause of death.

DNA analysis and other scientific methods are used to identify bodies that have been burned, but identifying completely burned bodies is challenging.

Violent incidents during protests cause great human loss. In such incidents, a complex and sensitive procedure is adopted to identify and determine the cause of death of those who die due to gunshots, fire, or other injuries.

Coordination between forensic science, as well as the police, and hospitals is very important to identify and determine the cause of death of the deceased. This process is sensitive from both a scientific and legal perspective.

Incident and initial procedures

People who die during the protests are often taken to the hospital immediately by eyewitnesses or friends. The name of the deceased is registered in the hospital and treatment is attempted. If the person is confirmed not to be alive, the body is sent for postmortem. Tribhuvan University Teaching Hospital, Kathmandu is a well-equipped centre for mortuary storage and postmortem. The body is preserved in a freezer facility. The teaching hospital has the necessary equipment for proper management of the body and postmortem, which makes the process systematic.

Identification process of the deceased

Initial identification

The identity cards, jewellery or other personal belongings of the deceased form the initial basis for identification. The name and address of the deceased can be ascertained from such items. If such items are not available, the relatives come to the hospital and identify the body.

Personal belongings are of great help in the identification process, but sometimes other scientific methods have to be used in cases where these items are destroyed.

Notification to relatives

Once the details of the deceased are registered in the hospital, the relatives are informed. The hospital maintains a list of the names of the deceased, which the relatives look at to identify the body. Once the identity is confirmed, the postmortem process proceeds.

Postmortem and medico-legal process

A medical-legal examination is required from the police before a postmortem can be conducted. In cases where police stations are affected, such a letter is issued by the Kathmandu Police Complex. A postmortem determines the cause of death, such as gunshot wounds, injuries or fire. This process is important for the relatives of the deceased and the community to uncover the truth.

The main causes of death during the protests currently include gunshot wounds, internal injuries, head injuries or fire. In cases of gunshot deaths, doctors analyze the nature of the bullet and the damage to the body.

Identification of people who died in a fire

The identification of bodies that died in a fire is complicated. For example, in the case of seven people who died in a fire in Bhatbhateni, identification is challenging. Methods such as presumptive identification and DNA analysis are used to identify burned bodies. If jewelry, clothes or other personal belongings are left, they can be used to identify them.

DNA Analysis

When a body is not completely burned and some tissue remains, DNA is extracted and analyzed. This process is carried out at the Central Forensic Science Laboratory of the Nepal Police. DNA analysis can confirm the identity of the deceased, but this process is time-consuming and resource-intensive.

DNA Analysis Process

DNA Extraction

DNA is extracted from white blood cells, because red blood cells do not have a nucleus. DNA can be extracted from bones or teeth in burned bodies, if they are not destroyed.

Polymerase Chain Reaction (PCR-M)

If the amount of DNA is low, the amount of DNA is increased by the PCR-M process. This makes it easier to analyze the DNA sequence adenine, guanine, thymine, cytosine.

Profile Matching

The DNA profile of the deceased is compared with the DNA of his father or mother. A 50 percent match between the father or mother's DNA confirms the identity.

Challenges in completely burnt bodies

If the body is completely burnt and the tissues are destroyed, DNA analysis is not possible. In such a case, identification becomes impossible. Also, if the relatives of the deceased do not contact them in time, the process becomes more complicated. The possibility of identifying completely burnt bodies is limited, but we must make the most of the resources and technology available.

This process is not only to identify the deceased and determine the cause of death, but it is also a means of ensuring truth and justice in society. Such sensitive processes provide comfort to the victim’s family and provide truthful information to society.

What to do to keep yourself and your family healthy during the current crisis? 8 ways

 What to do to keep yourself and your family healthy during the current crisis? 8 ways

In Nepal, the Gen-Z movement has burned down government structures and prisoners have escaped from prison.

Due to the shortage of medicine and limited hospital services, it has been suggested to treat common illnesses at home.

Contaminated water, pollution, and mental stress have increased health challenges due to the movement.

Nepal is currently at a very sensitive time. The Gen-Z movement has brought turmoil across the country. Government structures have been burned down, people's homes have been set on fire. Hospitals have become overcrowded. Prisoners have escaped from prison. The market system has become unstable, and the risk of medicine shortages and black marketing has increased. At such times, it is very important for individuals to be aware of public health.

The first thing to pay attention to during a crisis is the health security of themselves and their families. Problems such as lack of medicine, limited hospital services, polluted environment, contaminated water, and mental stress are current health challenges.

Amidst the challenges, it is important for the general public to take some precautions to avoid health complications.

1. Let's try to treat common diseases at home

In such a situation, there may be a shortage of medicines in the market. There may be a long wait for treatment at the hospital. In such a situation, if you experience symptoms such as a common cold, cough, or sore throat, do not go to the hospital unnecessarily. Let's adopt easy treatment measures at home.

- Gargling with salt water

- Drinking hot water, taking steam

- Resting, drinking plenty of water

- Home treatment using basil, ginger, and turmeric

Common fever and cough are self-healing in nature within two to three days, so let's be patient until it gets worse. However, if you experience severe symptoms, it is appropriate to seek advice from a health worker or go to a health facility.

2. Let's take special precautions to avoid contaminated water

Government structures, sewers, and water pipes have been damaged. These can lead to harmful chemicals, waste, or infectious elements mixing with water. There is a high possibility of diseases like cholera, typhoid, and diarrhea spreading, and chemical substances can cause many problems, so let's be careful.

– Drink only water that has been boiled for at least 10 minutes

– Use filtered or bottled water as much as possible.

– Pay special attention to the quality of water while cooking.

3. Take precautions to avoid fire and pollution

When houses burn, gas tanks explode, and structures are destroyed, toxic gases and dust are released into the environment, causing air pollution to reach high levels.

– Make it a point to wear a mask when going out.

– Avoid places with excessive dust and smoke as much as possible.

– People with asthma, allergies, or lung problems should be extra careful.

– Take special care of our young children.

4. Provide first aid for burns and wounds

Incidents of burns or injuries due to fires are increasing. Minor wounds can become serious if not treated immediately.

– Apply cold water to the burned skin (but do not use ice).

– Use a cream called ‘Silver Sulfadiazine’ available at the nearest drugstore.

– Keep the wound clean, do not use dirty bandages.

5. Management of physical fatigue of those involved in the movement

Many young people involved in the movement may be in pain. In such a situation, the indiscriminate use of antibiotics or painkillers can be harmful.

– Take a hot bath, immerse your hands and feet in cold water

– Apply salt water compresses

– Get plenty of rest

– Eat fruits, soft foods, and protein-rich foods

– Do light exercise

6. Be sensitive to mental health

During the peak of the movement, people make impulsive decisions due to the effects of adrenaline. In some cases, it leads to regret and deep mental stress. Losing a relative, getting injured, and the collapse of the country's infrastructure can all weaken morale.

– Reading an inspirational book. Accepting the current situation and trying to get used to it.

– Trying to reduce mental stress through yoga and meditation.

– Talking openly with relatives.

– Seeking entertainment (music, books, quiet movies) as much as possible.

7. Avoid misinformation and uncontrolled use of medicines

There are many cheap treatments or suggestions on the Internet. Not all of them are true and safe. If you need information about any medicine you use, you can call the Drug Information Center and get free advice.

Toll-free number: 1660-01-21500, Landline: 01-591311

Email: [email protected] WhatsApp/Viber: 9801236161

You can get information about the medicine you are using by contacting the above-mentioned means. To get basic information about medicines, you can read the contents of the book Medicine Knowledge Healthy Life here for free.

Therefore, do not search for medicines on Google or use AI. Consult an experienced person (pharmacist, health worker). Because taking medicines indiscriminately can cause more problems.

8. Stay in touch with family

Parents in the village may be very worried when they do not receive news of their children who have joined the movement. Rumors and fear may spread.

– Let us reassure our relatives by calling or sending messages from time to time.

– Let us also convey messages to worried families.

We must all move forward as citizens, consciously, with consensus, and with restraint. The crisis will pass, times will change, but in the meantime, every life we ​​save will be invaluable.

What are the health risks of repeatedly frying samosas and jerry in oil?

 What are the health risks of repeatedly frying samosas and jerry in oil?

Experts say, ‘Reusing oil increases the risk of heart attack, cancer and other diseases.’

Repeated heating of oil has a negative impact on health as it causes chemical changes and increases the amount of trans-fat.

It is recommended to store oil properly and use new oil.

Often, samosas, pakodas, jerry, etc. are cooked in the same oil repeatedly in chowks and markets. Some people even use the remaining oil after cooking food once in their own homes and kitchens. What happens when oil is used repeatedly in this way?

Experts say, ‘Reusing oil increases the risk of heart attack, cancer and other diseases.’

Not only at home but also in restaurants and roadside stalls, food is prepared by reheating oil. This has a negative impact on health. This can be responsible for many diseases, says senior nutritionist Bhupal Baniya.

Health effects of reusing oil

1. Chemical changes and increase in trans-fat

Repeated heating of cooking oil changes its chemical and nutritional properties. According to a study published in the Journal of Food Science and Technology (2021), repeated heating of oil increases the amount of ‘total polar compounds’, which is harmful to health.

These compounds damage the structure of the oil and increase the level of trans-fat. Bania says that trans-fat increases the risk of heart disease by increasing the amount of bad cholesterol.

According to a study published in the Journal of Nutrition 2020, reheated oil produces free radicals, which damage cells. Free radicals cause oxidative stress, which increases the risk of chronic diseases such as cancer and diabetes.

2. Cancer risk

Harvard T.H. A study by the Chan School of Public Health (2022) noted that reheated oil produces toxic substances such as aldehydes.

These substances can damage DNA, which encourages the growth of cancer cells. In particular, the oil used in fried foods is repeatedly heated, which increases the amount of these toxins, Bania said.

According to a study published in the International Journal of Cancer (2019), polycyclic aromatic hydrocarbons found in reheated oil increase the risk of cancer in the lungs, skin and other organs. This risk is especially high in fried foods in hotels and restaurants, where the oil is heated for a long time.

3. Inflammation

Reheated oil promotes inflammation. According to a study published in the American Journal of Clinical Nutrition (2021), the production of free radicals and other harmful compounds in reheated oil damages blood cells. Chronic inflammation can lead to diseases like heart disease, joint pain, atherosclerosis, and periodontitis.

4. Bacterial infections

When food particles remain in the oil, they encourage the growth of bacteria, says nutritionist Ayush Adhikari. He says, “If used oil is not stored properly, it can lead to the growth of bacteria like Clostridium botulinum, which causes botulism. This is a serious food poisoning that can cause muscle weakness, difficulty breathing, and other complications.”

5. Increase in cholesterol and acidity

According to a study published in the European Journal of Lipid Science and Technology (2023), the amount of saturated fat and oxidized lipids in repeatedly heated oil increases.

These compounds increase cholesterol levels, which harm the heart and blood vessels. In addition, the use of such oil can cause acidity, gas and digestive problems in the stomach, said Adhikari.

Ways to avoid reusing oil

Adhikari says that reusing oil can be avoided by cooking less. He says, "Do not use more oil than necessary and cook in small quantities. This reduces the chances of oil remaining."

You should try to use fresh oil every time you cook. If oil remains, he suggests storing it properly. After the used oil cools down, it should be carefully filtered to remove food particles. This prevents the growth of bacteria, said Adhikari.

"If oil is left over while cooking, it should be stored properly," says Adhikari. "The oil should be stored in a cool and dry place, away from sunlight and heat. Keeping it in the refrigerator reduces the growth of bacteria."

To avoid health problems caused by reusing oil, nutritionist Baniya suggests staying away from fast food and packet food. “These foods should be consumed less frequently as heated oil is frequently used in roadside stalls and restaurants,” says Bania.

He also says that it is important to avoid heating oil for a long time while cooking.

“When cooking, use mustard oil, olive oil or other oils with low saturated fat,” suggests Bania. “These oils are less harmful to heart health.”

Different oils have different smoke points. For example, olive oil is suitable for use at low heat, while sunflower or canola oil can be used at high heat. He also suggests paying attention to these things.

According to Bania, if there is a change in the color, smell or texture of the oil, it should be discarded. No. Such oil may contain high levels of harmful compounds, so the quality of the oil should be checked before use.

What should be the diet and lifestyle during the rainy season?

 What should be the diet and lifestyle during the rainy season?

The rainy season lasts from Asar to Bhadra. According to Ayurveda, various changes occur in the body during this time.

Light and digestible food and regular hygiene and exercise are necessary during this time.

Health and immunity can be increased during the rainy season by adopting home remedies and precautions.

The rainy season adorns Nepal, including the Indian subcontinent, from Asar to Bhadra. According to Ayurveda, the rainy season is associated with the elements of water and air. This time is a time of nourishment and transformation. It is believed that during this season, there are significant changes in the properties of the atmosphere and environment, which can affect our physical and mental health.

This season is considered a period of purification and removal of toxins because rain is seen as a natural cleanser, which washes away toxins and impurities from the atmosphere and the earth.

There are generally 6 seasons in Nepal. Ayurveda science has a special discussion on routine and seasonal habits. Each season has a separate description of diet, habits and lifestyle.

Dr. Dipen Devkota MD, Kayachitika

The rainy season, i.e. the rainy season, which usually falls from Asar to Bhadra, is considered a very sensitive time for our body. According to Ayurveda, the environment is cold and humid during this time, which can be a major cause of imbalance in the Vata dosha in the body.

In addition, when the summer heat ends and the cold begins, our digestive power also weakens, which is called ‘Mandagni’ in Ayurveda. Therefore, during the rainy season, food is not digested properly, gas, indigestion, joint pain, fatigue, laziness, skin diseases, colds and other problems may appear.

Therefore, Ayurveda emphasizes the need to take special care during the rainy season. To keep the body in balance during this time, special attention should be paid to diet, sleep, exercise and thinking. Keeping all these things in mind and following the seasons is called Ritucharya in Ayurveda.

What to eat during the rainy season?

During the rainy season, eating too much oily, spicy, sour or cold food is not good for our body. Therefore, we should eat light and digestible food during the rainy season. It is considered best to use a diet rich in sweet, sour, salty and fatty foods. It is good to eat foods made from old barley, wheat and sali rice dishes like anna. Similarly, foods such as meat of land animals and meat juice processed with spices, khichdi, hot dal rice, dal soup, wine made from grapes, corn bread, hot vegetable soup, and greens are suitable.

It is good to drink hot water. It is better to avoid eating raw milk, curd, chiura, ice cream, cold drinks during this time, because such foods increase the problems of gas, indigestion as well as vata and phlegm.

It is good to use sesame oil, ginger, cumin, asafoetida, turmeric, pepper, etc. in food, which strengthens the digestive power and balances vata and phlegm. It is best to eat hot food as much as possible, on time and in small quantities.

What to do from morning to night?

It is considered good to wake up early in the morning during the rainy season. Massaging the body with oil improves blood circulation and reduces joint pain. It is good to take a warm bath after massaging with sesame oil. Then you can do light exercises or yoga, such as Vajrasana, Trikonasana or Shavasana. Serious exercises, excessive intercourse or running too much should not be done, because the digestive power is weak.

Putting 2-2 drops of sesame oil or neem oil in the nose in the morning can prevent cold, headache or allergy. To avoid cold, it is necessary to wear warm, light clothes and keep the body dry. It is not good to sleep during the day during the rainy season, it weakens the digestive system even more. You should eat light food at night. Do not sleep immediately after eating, it is better to wait at least 2 hours. The bed should be clean and comfortable. You should sleep with your body covered to avoid back pain or cold.

Natural Treatments and Home Remedies

Since the immune system decreases during the rainy season, it is good to take some Ayurvedic medicines regularly. Triphala, Guduchi (Giloy), Haritaki, Dashamool, Hingwashtak powder, etc. are helpful in improving digestion and increasing the immune system. Ginger and honey, basil leaves, turmeric water, pepper, etc. can be used at home. Boiling basil, ginger and pepper in hot water once a day and drinking it can prevent colds, coughs and infections.

Water, environment and our behavior

Special precautions should be taken while drinking water in the rain. Drink lukewarm water that has been boiled and cooled as much as possible. Do not drink water from rivers, tanks or mud. Also, walking in water, getting wet or staying in very cold places can cause diseases in the body.

If your clothes get wet, dry them immediately. It is advisable to carry an umbrella or wear a raincoat when going out to protect yourself from rain or getting wet. It is very important to keep the area around the house clean, to prevent the accumulation of garbage, to prevent water from stagnating, and to prevent the spread of weeds.

Washing your hands regularly with soap and water, especially before eating, and keeping your surroundings clean can help prevent the spread of diseases. It is also important to avoid things like overexertion and prolonged exposure to the sun.

Mental and emotional health

Due to less sunlight and the outbreak of asthma during the rainy season, some people may feel mentally tired, irritable, or sad. Therefore, it may be a good idea to think positively, engage in laughter, meditate and yoga, listen to music, or read a favorite book.

Advice for children, the elderly and the sick

Children, the elderly and those who are already sick should take special care during the rainy season. Keeping them warm, feeding them hot food, protecting them from cold and giving them regular oil massages will increase their immunity. It is important to consult a doctor before using any medicine.

Although the rainy season is naturally a pleasant time, it is challenging for the body. If we adopt a seasonal lifestyle as prescribed by Ayurveda, we can live a healthy, energetic and disease-free life even during the rainy season. By following Ayurvedic Ritucharya by adopting cheap, easy and home remedies, the body gains the strength to fight diseases on its own.

What happens in the body when we are in deep sleep?

 What happens in the body when we are in deep sleep?

Sleep is as necessary as nutritious food and pure water. Why do people feel sleepy? Why is it necessary to sleep? To know these mysteries, another important question is necessary, ‘What happens in our body when we are in deep sleep?’

Why do we feel sleepy?

Sleep also has stages. It is mainly divided into two parts. The first is rapid eye movement. The second is non-rapid eye movement. Apart from this, there are three more stages, which are called N-1, N-2 and N-3.

Out of these, N-3 is the deep sleep stage. It is also called wave sleep. We usually enter this stage within the first two hours of sleep. That is, we reach deep sleep. This is repeated in short periods throughout the night.

During this stage, i.e. deep sleep, the brain produces delta waves. This wave slows down brain activity and puts the body into a deep state of rest. It is very difficult to wake people up in this state. Even if they wake up, they often feel confused or unfocused.

Processes that occur in the body during deep sleep

During deep sleep, the body carries out various physical processes that play an important role in maintaining health and functionality.

1. Cell repair and growth

During deep sleep, the body repairs and regenerates cells. During this period, the production of growth hormone is high. Especially in children and adolescents. This hormone helps in the growth and repair of muscles, bones and other cells. In adults, this hormone also plays an important role in healing injuries, strengthening muscles and repairing cells.

During this time, the body also accelerates protein synthesis, which helps in regenerating damaged cells and building new cells.

2. Increases immunity

During deep sleep, the immune system is strengthened. During this time, the body produces proteins like cytokines, which are necessary to fight infection. Lack of sleep weakens the immune system.

Sleep promotes the activity of T-cells and other immune cells. These cells destroy viruses and bacteria that enter the body. Vaccines are also more effective in people who get enough sleep.

3. Brain cleansing and memory

During deep sleep, the brain cleanses itself and strengthens memory. In this process, it removes toxins and waste from the brain. Deep sleep also helps in increasing memory. The things learned throughout the day are organized in the brain and converted into long-term memory. This process is driven by the interaction between the hippocampus and the neocortex.

4. Energy storage and digestion

During deep sleep, the body's digestive rate decreases, which conserves energy. Heart rate, breathing, and body temperature decrease, which allows the body to rest. During this period, the body controls glucose utilization and improves insulin sensitivity, which reduces the risk of diabetes.

Sleep also controls levels of stress hormones such as cortisol. If sleep is lacking, cortisol levels increase, which increases the risk of stress, anxiety, and obesity.

5. Heart Health

Sleep helps keep the heart and circulatory system healthy. Blood pressure and heart rate decrease during this time, which relaxes the heart. People who get regular sleep have a lower risk of high blood pressure, heart attack, and stroke. In addition, during this time, the body also focuses on repairing blood vessels and reducing inflammation.

Effects of sleep deprivation

If sleep deprivation occurs, various body systems are negatively affected. Sleep deprivation weakens memory, reduces immunity, increases stress, and imbalances in digestion. In the long term, sleep deprivation increases the risk of diseases such as diabetes, obesity, heart disease, depression, and Alzheimer's.

How to get a good night's sleep?

Regular sleep schedule: Go to bed and wake up at the same time every day.

Sleeping environment: A quiet, dark, and comfortable room.

Limit screen time: Reduce mobile and computer use before bed.

Healthy lifestyle: Regular exercise, a balanced diet, and stress management.