Many people firmly believe in the iron law of fasting after 8 pm. On the basis of this commandment, "Don't eat three hours before going to bed" and "During the weight loss period, the last meal of every day should be finished before 5 pm." A series of new meal time-limited sentences emerge one after another.

The basis of "night fasting" is low activity and low energy consumption at night. If you eat too much food, the calories that the body can't consume will be converted into fat and stored in the body, which will eventually lead to obesity.

Will eating after 8 pm make you fat?

If you are still skeptical about the remarks of Professor Aaron Carroll and Professor Rachel freeman, let's take a look at the reasons for obesity.

Human obesity is caused by fat. How is fat formed?

Adipose tissue is mainly composed of adipocytes, a small amount of fibroblasts and a small amount of intercellular collagen. When humans are 2-5 years old, adipocyte precursors can differentiate into adipocytes similar to fibroblasts, and some cells become "stem cells". 1 1- 14 years old, the number of adipocytes no longer increases. The decisive factor of obesity lies in the increase or decrease of fat cell volume. Because the number of fat cells in different parts is different, the speed of cell growth is also different, which leads to different degrees of obesity in different parts of a person.

After eating, food will be converted into energy to maintain the body's metabolic operation and daily activities. Once the intake of food calories can not be consumed by the body immediately, these remaining energy will become neutral fat and be stored in fat cells, which will increase the volume of fat cells and cause obesity.

Scientists at Oregon Medical University spent a year observing the relationship between food behavior and weight of monkeys. They set different diets for the monkeys as the research objects. Some monkeys eat during the day and some monkeys eat at night. The study found that the body mass index of monkeys who used to eat at night was very close to that of monkeys who ate during the day.

Scientists have confirmed that eating time has no major effect on weight gain. The chief culprit of obesity lies in the high total calories in the diet. It can be seen that whether intake and consumption are balanced is the key to decide whether to gain, lose or maintain weight. Every time you eat, your body stores excess calories and converts them into fat.

Proverbs 2: If you want to lose weight, you can only eat food with negative calories!

It is widely rumored on the Internet that eating negative calorie food can achieve the goal of losing weight.

In fact, any food can provide heat for the human body, which means that there is no so-called negative calorie food at all. Where does the word "negative calorie food" come from? Some foods have less calories than the human body needs to digest and absorb food, and those foods have the functions of accelerating metabolism and promoting fat burning. Therefore, they are called "negative calorie foods".

Foods defined as negative calories are usually vegetables and fruits. For example: apples, broccoli, cauliflower, cabbage, carrots, tomatoes, cucumbers, strawberries, green beans and so on. The most frequently mentioned negative calorie food is celery, because celery fiber is thick and difficult to chew. Digestion of celery consumes more calories than celery itself, which meets the standard of negative calorie food.

In fact, the calories consumed by these so-called negative calorie foods when they are digested in the body are insignificant compared with the calories carried by these foods themselves. For example, the seemingly laborious action of chewing celery is actually as useless as burning calories with a small match on the grassland.

So, is it credible to say that refusing any food except negative calorie food can make people lose weight?

In fact, many times, even if we choose so-called negative calorie foods, we still need to process these foods before eating them. In the process of cooking, various seasonings add a lot of calories to our negative calorie food.

However, in order to lose weight, it is unwise to choose negative calorie food without any seasoning, even if the taste of the food is not considered.

There are two reasons:

First, there is not enough nutrition.

Vegetables and fruits are rich in nutrition, but they lack at least two kinds of nutrition, one is protein and the other is fat. Both of them are indispensable elements for the normal operation of various human functions.

Second, some fruits have a high sugar content, and eating too much can easily lead to an increase in blood sugar.