The root cause of obesity is that energy intake exceeds energy consumption. Heat comes from energy-supplying substances in food: protein (4 kcal/g), fat (9 kcal/g) and carbohydrate (4 kcal/g). The heat consumption is mainly composed of three aspects: basic metabolism, physical activity and food thermal effect. The center of weight loss is to achieve a negative balance of calories (calorie intake is less than calorie consumption). The level of basal metabolism is mainly related to the nutritional status and eating habits of the human body, so not eating after noon is essentially a very harmful way to lose weight. Physical activity and exercise amount are not the same concept, and high-intensity exercise is not conducive to losing weight. The thermal effect of food is generally 2~3 hours, and the theoretical basis of eating less and eating more meals is beneficial to lose weight.

All weight loss methods are directly or indirectly centered on calories, the effective index is to reduce calories, the health index is to protect basal metabolism, and the continuous index is satiety and satisfaction in appetite control.

Weight loss principle

1, scientifically arrange three meals a day

Under normal physiological conditions, most people are used to having three meals a day. The biggest consumption of human body is in the morning of a day. Because after a night of digestion, the stomach has been emptied. If you don't eat breakfast, the energy consumed by the whole morning's activities will be provided by the dinner the day before, which is far from meeting the nutritional needs. Such long-term sterilization is easy to cause acute gastritis, gastric dilatation, acute pancreatitis, coronary heart disease, myocardial infarction and so on. If you eat at night, you will produce excess energy, and the remaining energy will be converted into fat, which is easy to get fat. So don't eat anything within three hours before going to bed is the best way to lose weight, and pay special attention not to drink or eat meat.

2. Control staple food and limit sweets.

If the original food intake is large, the staple food for three meals a day can be reduced by 50 grams. Try to eat less or not to eat too much starch and extremely sweet food, such as sweet potato, potato, lotus root starch, jam, honey, candied fruit, preserved fruit, malt extract, fruit juice candy and so on. Non-staple food can use lean meat, fish, eggs, bean products and vegetables and fruits with low sugar content.

3. Eat more and eat less

In the process of losing weight, it is best to follow the principle of more meals and less meals, and allocate the total amount of food from three meals a day to five meals a day. And the last meal of the day is best eaten 5-6 hours before going to bed.

4. Edible fiber

Dietary fiber can reduce weight: fiber can hinder the absorption of food, and it can absorb water and expand in the stomach, which can form a larger volume, make people feel full, help reduce food intake, and have a certain effect on weight control. People can digest and absorb food rich in fiber in a certain period of time, and then discharge waste. People who eat more fiber in their diet chew more often, so they eat more slowly. In this way, the small intestine can slowly absorb nutrients, and the blood sugar level is difficult to rise. Because dietary fiber can promote intestinal peristalsis, if eaten in large quantities, constipation will naturally decrease, and the incidence of colorectal cancer will also decrease.

5. Drink water or soup in moderation.

Drinking water is an indispensable demand in people's daily life. You can eat watermelon and tomatoes to quench your thirst in summer. Watermelon juice, winter melon soup, diuresis Excessive water restriction can make obese people sweat gland secretion disorder, which is not conducive to body temperature regulation, especially urine concentration, metabolic residues are not easy to discharge, and can also cause symptoms such as polydipsia, headache and fatigue. Proper drinking water can replenish water and regulate lipid metabolism. Drinking soup is good for human health. It is found that soup is a good appetite suppressant. So some obese people use soup to lose weight.

Step 6 drink less

The main component of wine is alcohol, which is high in calories and can promote the deposition of fat in the body. Every liter of alcohol can produce 7 kilograms of heat. Protein, sugar and fat can also generate heat (1g protein and sugar each generate 4 kilocalories, while 1g fat generates 9 kilocalories), but they contain beneficial ingredients. And alcohol, which only contains calories, makes people blindly fat. It has been calculated that a large bottle of beer is about half a bowl of rice. Especially some people like to drink it after meals or before going to bed. If they often drink a lot and eat high-calorie food, it may cause excess calories, increase the accumulation of subcutaneous fat, and lead to obesity.

7. Eat less lean meat

100g Lean pork contains protein 16.7g, but its fat content is 28.8g Lean pork is actually not a food with high protein and low fat. Its fat content is higher than that of protein. So eating too much lean meat will greatly increase the intake of animal fat. People's fatness is related to their calorie intake.

8. Eat more foods rich in cellulose.

Proper intake of cellulose is not only helpful to reduce the direct intake of fat in human digestive tract. At the same time, cellulose can hinder the digestion and absorption of carbohydrates, slow down the speed of sugar molecules entering the blood, and help reduce the release of insulin, which will be very beneficial to prevent obesity, because high insulin is a signal for cells to store fat.