According to the Japanese Health Encyclopedia website, internal medicine expert Nakano rimei believes that it is impossible to lose weight just by drinking a lot of water. The saying that "drinking more water can lose weight" comes from the fact that some people take it for granted that "as long as they drink more water, they can lose weight" when they see artists or models saying that they want to drink 2 liters of water a day. But in fact, there is no scientific evidence for the saying that a lot of water can make you thin.
Drinking water before meals is good for weight loss in the elderly
In a randomized controlled trial in the United States, drinking two glasses of water before meals was found to achieve weight loss. The study was conducted by Brenda & middot; David of Virginia Tech University.
In the past, studies have focused on overweight and obese middle-aged and elderly people. They were asked to drink water before meals. Finally, it was found that after drinking water, they reduced 75-90 kcal of heat per meal on average, reducing about 300 kcal of heat per day. In this study, 48 men and women aged 55-75 were divided into two groups. One group drank two glasses of water (about 454 ml) before three meals a day, and the other group did not. They were asked to maintain a low calorie diet of 1200-1500 kcal a day.
After a 12 week follow-up survey on them, it was found that the drinking group lost about 7 kg of weight, while the non drinking group lost about 5 kg. Therefore, the researchers believe that drinking water can make the stomach expand, eating less food can get a sense of satiety, and drinking boiled water has a better weight loss effect than drinking sugary drinks.
There is no clear evidence that young people have a good digestion and drink water to lose weight
In view of this research conclusion, Nakano rimei pointed out that in this study, the research objects are overweight or the middle-aged and elderly people who have been diagnosed with obesity. For the middle-aged and elderly people whose gastrointestinal function is gradually degenerating, drinking water before meals can increase the sense of satiety and reduce their food intake, so as to achieve good results in weight loss.
However, for young people with good gastrointestinal function and good digestive function, there is no clear research evidence on whether they can get the same effect, and there is no clear research evidence that drinking more water can make the human body consume more calories.
It should be noted that drinking too much water may lead to hyponatremia and even water poisoning. Drinking water is a good habit, but drinking a lot of water has no other effect on weight loss. Proper drinking water, sleep and balanced diet can keep the natural health and beauty.