What is considered overweight or obesity

What is considered overweight or obese

Along with hypertension, diabetes, cancer, overweight and obesity is currently considered a new "pandemic" of the 21st century because of its rapid increase and serious consequences on health and burden. serious illness it causes.

What is overweight and obesity

According to the World Health Organization, overweight and obesity means excess and abnormal fat accumulation in one area of ​​the body or the whole body, causing many health risks. In general, overweight and obesity represent a body weight higher than the norm in a healthy person. Obesity is a chronic disease caused by an excess of body fat. There is always a certain amount of fat in our bodies and this fat is needed to store energy, retain heat, absorb shocks and perform other functions.

Overweight and obesity were classified by body mass index (BMI). Body mass index is calculated based on height and body weight. Body mass index (BMI) will be calculated by the formula: 1 person's body weight (in kilograms) divided by the square of height (in meters). Because BMI describes the relationship between body weight and height, it will be closely related to the total amount of body fat distributed in the adult body.

According to the classification of the World Health Organization, an adult, excluding pregnant women, with a BMI between 25 and 29.9 is considered overweight, and an adult with a BMI >= 30 considered obese. The most noticeable sign of overweight and obesity is an increase in body weight and fat accumulation in some special parts of the body such as: abdomen, thighs, waist, even in the chest.

Causes of overweight and obesity

The main causes of obesity are:

An imbalance between energy intake and energy expenditure. Dietary energy intake exceeds the body's energy needs, so energy is redundant and converted into fat accumulated in organs and organizations.

Genetic factors

There are people who carry some genes in gene groups such as genes that promote appetite, genes related to energy expenditure, genes that regulate metabolism, genes related to cell differentiation and development. fat. In the family, if one parent or even both are obese, the risk of children being overweight is very high. People who are overweight and obese due to genetic factors have a slow metabolic rate, which is difficult to improve.

Failure thyroid

It is a condition in which the thyroid gland does not produce enough of the necessary hormones for the body. The lack of hormones causes the metabolism to slow down, which means that the amount of fat is not burned, which is the cause of weight gain.


Lack of sleep is the cause of obesity

According to research, if you regularly lack of sleep for 30 minutes a day, your risk of overweight and obesity increases by 17%. When you don't get enough sleep, the amount of ghrelin will increase, making you often feel hungry, craving foods high in sugar. Over time, it will lead to uncontrolled appetite, which is the cause of overweight and obesity.

People at high risk of becoming overweight or obese include:

People who have a habit of using fast food, foods rich in energy, eating a lot of fat, eating a lot of fried and fried foods, eating less vegetables, drinking a lot of soft drinks, alcohol...

Sedentary people, middle-aged people, postpartum women, families with many obese people, urban residents.

A sedentary office environment, sedentary or lazy to exercise is also the cause of obesity.

Physically active people often eat energy-rich foods, when they change their lifestyle, their activity decreases, but they still keep the habit of eating a lot, so they become obese...

Consequences of being overweight

Psychological impact from oversized appearance

Overweight Obesity causes the body to become oversized, so it causes feelings of inferiority and stress for overweight or obese people themselves. Overweight and obese people often lose confidence in communication, are afraid to communicate and appear in front of crowds with stress, less flexibility in daily life... leading to reduced work efficiency.


Overweight and obese people are prone to osteoarthritis, osteoporosis, and constant pain due to the pressure from their body weight on bones and joints. Knee and spine joints are injured the earliest. Overweight and obese people are more prone to gout.

Cardiovascular disease

Cardiovascular disease

Overweight people are often accompanied by dyslipidemia, commonly known as blood fat or high cholesterol. When high cholesterol causes atherosclerosis, high blood pressure, stroke, myocardial infarction. On the other hand, in overweight and obese people, the heart must regularly work harder to pump blood to the body and in the long run overload the heart, so that obese people are prone to cardiovascular diseases. Currently, the death rate from cardiovascular disease is leading among the causes, in which many cases are complications of obesity.


Obesity is closely related to type 2 diabetes because it causes insulin resistance (the hormone that regulates blood sugar and quickly puts glucose into cells for use) so it is a direct cause of type 2 diabetes. 2 in obese people.

Digestive tract disease

The reason is that overweight and obesity make excess fat stick to the intestinal loops causing constipation, easy to produce hemorrhoids. The stagnation of feces and toxic wastes generated in the metabolism can lead to colon cancer. Excess fat accumulated in the liver causes fatty liver disease, if not treated promptly, it can lead to cirrhosis... Fatty metabolism disorder produces gallstones.

Memory decline

Children who are overweight and obese often have lower IQs than children of normal weight. Obese adults have a higher risk of developing Alzheimer's disease than the general population.

Respiratory disease

The accumulation of too much fat in the chest, diaphragm and abdomen will cause breathing difficulties for the patient. In severe obesity, shortness of breath can cause Pickwick's syndrome with episodes of nocturnal apnea that can be fatal. In addition, the activity of the diaphragm and tracheobronchial airways of obese people is often limited due to "fat clinging", obese people often have breathing disorders, snoring, sleep apnea, obesity is more severe arrhythmia. breathe more.

Endocrine disorders due to overweight and obesity

Obese women are often prone to menstrual disorders, polycystic ovaries, difficulty getting pregnant, and high risk of infertility. If the pregnancy is at risk of having a difficult delivery, the baby is prone to metabolic disorders. Obese men are often physiologically weak, at risk of infertility.

Obesity and cancer risk

Overweight and obese people all have high blood cholesterol and high blood insulin, which increases cholesterol in immune cells, reducing the immune system's ability to kill cancer cells in the body. Some studies show an association between obesity and cancer such as esophageal cancer, rectal cancer, breast cancer, uterine cancer, hepatobiliary cancer and prostate cancer.

To reduce the risk of serious complications from being overweight or obese, doctors recommend that each person control their weight with a healthy, balanced diet, combined with reasonable exercise. to improve health as well as prevent dangerous diseases caused by overweight and obesity.

Hopefully through the above article you have better understand about Obesity And Overweight as well as how to lose weight quickly. Stay tuned for new articles on Healthy Life For You to be updated with useful information about Obesity And Overweight !

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