Our body is made up of about 30-40% solids and about 60-70% water. Half of the solid components are body fat, accounting for about 15-20% of human body weight.

Most of the energy needed by the human body is supplied by fat, which is an instinctive function of the human body. However, if food intake is improper, fat will be surplus in the body and will precipitate. In addition, insufficient exercise compared with the increase of body fat will destroy normal fat metabolism and make fat accumulate in the body.

There are also disorders in the regulation of the nervous system and endocrine system, which can also cause excessive fat production and make people fat. For example, if the nervous system is disturbed, the feeding center cannot keep balance. Although I am not hungry, I can't help but want to eat delicious food, and I can't resist the food in front of me.

When the endocrine system is disordered, the imbalance of insulin supply and demand, abnormal secretion of pituitary gland, thyroid gland and gonad will destroy the metabolic regulation function of human body, which are all the reasons leading to obesity.

Some people think that obesity comes from heredity. Indeed, obesity often comes from the same family. If parents are obese, two-thirds of children are obese; If one parent is obese, then half of the children are obese. But this genetic reason is almost always caused by acquired eating habits.

Eating the same food every day under the same roof will naturally lead to obesity for children and parents. Obesity does not have genetic quality, but lies in hereditary eating habits and methods.

The truth about fat and obesity

It is generally believed that adipose tissue has almost no metabolism and is just a calm fat storage. Recently, however, some people put forward a more natural view that adipose tissue is like a wholesaler, in which many substances come in and out lively.

Adipose tissue consists of fat cells, blood vessels, combined tissues, etc. Blood vessels are responsible for the entry and exit of substances needed for fat cell metabolism, while combined tissues are filled in the gaps between cells. Fat is contained in fat cells in the form of fat droplets, which almost fills the whole cell, while the core is pressed in the corner.

It is precisely because the nucleus that should be the center of cell activity is in such a state that most people mistakenly think that fat cells are inactive cells.

Originally, fat is a substance formed by storing the remaining nutrients in the body, which is released in the original form to meet the needs of physiological functions. Therefore, when the excess nutrients are within a certain limit, whether ingested or released from fat cells, as long as the regularity can be maintained and the fat storage is fixed, the ideal weight can be maintained.

On the contrary, when excessive nutrients are ingested into cells and the release function is hindered, the absolute amount of fat will increase abnormally, causing obesity.

Extended data

Ordinary period

Developmental obesity is a normal phenomenon.

When women enter puberty, functional changes begin to take place in the ovaries and adrenal cortex, producing two hormones, more women than men, and then ovarian ovulation will naturally synthesize progesterone, which will lead to external physical changes of women, such as rapid increase, breast development, body fat increase and gradual fullness, showing obvious secondary sexual characteristics.

These changes are normal and natural development can't be crossed. What is particularly striking is that adolescent obesity plays a vital role in sexual maturity, menstrual cramps and the formation of laws. There is no need to worry too much, which will only increase the worries of alarmists.

In fact, many women worry that this kind of adolescent obesity will get out of hand as soon as they gain weight, so they try their best to go on a diet. Over time, they suffer from psychological anorexia and serious lack of nutrition. In any case, it is harmful to the normal development of adolescence and even to the normal growth in the future.

Expert advice: Adolescent obesity can survive without losing weight.

In order to develop healthily and normally in adolescence, we must rely on a reasonable and timely diet, but we should avoid overeating and love snacks and sweets. Pay more attention to physical exercise and physical labor, and obesity in adolescence can be passed smoothly. Unless a few people are particularly obese, there is no need to make a fuss about losing weight.

After work, the harder you work, the easier it is to gain weight.

A survey of office workers on a professional website in the United States shows that working in the workplace often leads to obesity, especially the harder you work, the easier it is to get fat. A survey of 1600 office workers on Careerbuilder career website in the United States found that as many as 47% people gained weight in their current jobs.

The survey found that the harder you work, the easier it is to get fat. The main reason is that there is no time to exercise when you are busy at work, and 73% of workplaces have no fitness facilities.

Middle age-the easiest time to get fat

According to statistics, before 15 years old, 15% people became fat; At the age of 15- 19, 14% people are obese; 20-29 years old, 18% people get fat; 30-39 years old, 33.8% people are fat; 40-49 years old, 28. 1% people get fat; 50-59 years old, 56% people are fat; People over 60 seldom get fat.

1. physiology

Between the ages of 30 and 35, the functions of various organs begin to decline, such as the function of the heart and the function of the respiratory system. The metabolism of the corresponding organs naturally declines, and the calorie consumption will also decrease, so the accumulated fat will live in the abdomen, buttocks and thighs very accurately.

2. Sports.

When people reach middle age, due to psychological and practical reasons, mental and physical labor will be reduced, and calorie consumption, going out and exercising will also be reduced, so excess calories will be converted into fat.

3. Spiritual aspect

When people reach middle age, all aspects, including career and family status, tend to be stable and calm. After understanding life, many people are satisfied with the present situation, and naturally they are carefree, broad-minded and fat. These are all caused by the action of spirit on nerves and the action of nerves on endocrine.

After recovery-in the recovery stage, appetite tends to soar.

Experts remind that, in addition to the above stages, people may be obese when they are frustrated or proud, but as long as they have a calm mind, a normal and reasonable diet and pay attention to exercise, they will definitely go to stay away from obesity.

Baidu encyclopedia: getting fat