May 20th is the 2025 National Nutrition Week and Chinese Student Nutrition Day, with this year's theme being the "Eat, Move, Balance, Healthy Weight National Action". The topic of "weight management" has recently attracted social attention, but many people still have misconceptions about how to lose weight. To this end, the Health Communication Branch of the Chinese Preventive Medicine Association has compiled 6 cold knowledge about weight loss to help the public better manage their weight. When it comes to weight loss, many people first think of quitting sugar. In fact, the average sugar intake of Chinese residents is 19% of the recommended value, but the average energy supply ratio of fat is already 119% of the recommended value. Long term high oil diet will increase the risk of overweight and obesity, and will also increase the incidence rate of cardiovascular disease, diabetes and other chronic diseases. So weight loss should not only focus on sugar, but also pay attention to reducing the intake of cooking oil. Brushing teeth after meals helps with weight loss. A Japanese study found that people who brush their teeth three or more times a day are less likely to experience obesity. Experts believe that brushing teeth will give the mouth a fresh and clean feeling, which will to some extent suppress the desire to eat again, thus better managing weight. Research has found that using blue tableware can reduce people's appetite by 40%. When people see blue, they find it difficult to immediately associate it with food, thus reducing their desire to eat. Research has also found that using smaller bowls and plates can reduce food intake by 15% and single meal calories by 20%. 4. To lose weight, one should "eat more". Obesity also belongs to "malnutrition", with 80% of "overweight friends" lacking at least two nutrients in their bodies. To lose weight, it is important to pay attention to balanced nutrition and diverse foods. One should eat more whole grains, mixed beans, and potatoes, as well as vegetables and fruits. Drinking more water can promote metabolism and reduce hunger. 5. Losing weight cannot make people look younger. There are often comparisons of appearance before and after weight loss on the internet, claiming that "weight loss can make people look younger". In fact, many of these photos are the result of "beauty filters". Improper weight loss may result in the loss of fat, muscle, and water, leading to sagging skin and appearing more aged. Therefore, it is not advisable to lose weight too quickly, and it is advisable to lose 2 to 4 kilograms per month. Also, pay attention to increasing strength training, supplementing high-quality protein and moisture, and avoiding skin sagging. 6. Sugar substitutes (sweeteners) are not weight loss drugs. Many people believe that eating sugar substitutes can help with weight loss, while others believe that sugar substitutes are harmful to the body. Research has shown that replacing added sugar with sweeteners can indeed reduce energy intake, while keeping the total dietary intake constant. However, weight management depends on overall energy balance, and even if sugar intake is reduced and many other high calorie foods are consumed, weight loss cannot be achieved. China has clear management regulations for sugar substitutes, and the reasonable use of sugar substitutes according to the standards will not cause harm to human health. It should also be pointed out that sugar substitutes are not weight loss drugs and their effects should not be exaggerated. (New Society)