And some people eat very little, even if they meet their favorite food, they feel full and enough is enough.
Besides psychological factors and gastrointestinal hormones, are there other reasons?
Studies have shown that appetite is also controlled by taste cells on the tongue.
Some people are particularly fond of sweets, starches and fatty foods, and they can't stop because the threshold of reward system in the brain has risen, that is, they need to eat more to reach the same dopamine level in order to have pleasure.
In addition, if they eat like this for a long time, their taste will be greatly weakened, and their taste perception of food will be significantly reduced, which will lead to their stronger appetite and more eating.
I hardly drink drinks, because the sweetness of drinks is too sweet for my taste buds to drink.
The researchers found that rats fed high-calorie food for eight weeks gained more than 30% weight, while the taste buds on their tongues decreased by 25%!
Obesity can lead to the increase of tumor necrosis factor -α(TNF-α), which causes chronic inflammation. Taste bud cells are particularly sensitive to this inflammatory factor, resulting in a rapid decline in the overall number of taste buds.
The decrease of taste bud cells affects the sense of taste, which makes people tend to choose unhealthy food with high calorie and high salt, so they fall into a vicious circle:
Eat high-calorie food → gain weight → decrease taste buds → eat more high-calorie food → gain weight again → decrease taste buds again …
In this cycle, it won't be long before you lose your shape.
Fortunately, whether it is human or animal, the renewal speed of taste bud cells is very fast, and the average life span is about 10 day.
Therefore, the way to break this vicious circle can rely on a healthy diet structure to prevent the decrease of taste bud cells as much as possible, so as to avoid constantly choosing high-calorie foods.
(For a healthy diet, please pay attention to WeChat official account: tough dad-diet)