Alkaline foods such as strawberries, oranges and tomatoes are low in calories and rich in various nutrients, which helps to maintain the normal metabolism of the body and achieve the effect of losing weight. Some people say that obesity is always thin because acidic food causes acidic constitution and the body's metabolic ability becomes worse. Therefore, it is recommended to eat more alkaline foods to neutralize acidic constitution in order to achieve the purpose of reducing fat. However, Huang Shizhen, head of the Nutrition Department of Children's General Hospital and nutritionist, said that both acidic and alkaline foods will only affect the pH of urine, but will not affect the pH of blood, nor will it directly lead to the acid-base imbalance of physique, so it cannot be said that acidic foods or physique can easily lead to obesity.
Healthy people are naturally weakly alkaline, with a PH of about 7.35 to 7.45. At this time, the body can play its best work efficiency and help metabolize excess fat in the body. On the other hand, acidic constitution may be caused by excessive accumulation of anions such as phosphorus, sodium and chlorine in the body after digestion, absorption and metabolism, which makes the body unhealthy, produces inflammatory reaction, is easy to fatigue, and has poor blood circulation and metabolic ability, thus hindering the metabolic speed of fat and making it difficult to eliminate fat.
Obesity is mostly caused by eating too much food with high fat, high calorie and high sugar, lack of exercise and poor metabolic function of the body. Nutritionist Huang Shizhen said that acidic foods such as meat and eggs are mostly high-calorie foods, and acidic constitutions are not easy to metabolize. On the other hand, vegetables, fruits and other alkaline foods are mostly low in calories and rich in cellulose, which can help gastrointestinal peristalsis, promote defecation and help eliminate fat and fat.
Based on the principle of a balanced and healthy diet, people should eat less meat and more fruits and vegetables. It is suggested that they eat 3 servings of vegetables every day, of which 1.5 servings are dark green vegetables. Fruit is served twice a day, each time about the size of a baseball.
As for which alkaline foods are rich in content and low in calories in the season, nutritionist Huang Shizhen recommends five kinds of fruits as follows:
1. Guava: It is a fruit with low calorie density, strong satiety, rich in cellulose and vitamin C, which can help gastrointestinal peristalsis, promote defecation, avoid excessive accumulation of fat and whiten skin.
2. Tomato: rich in pectin and skin fiber, with low calorie density, sufficient water and good satiety, and because it contains potassium ions and citric acid, it helps to improve edema, puffiness and burning.
3. Oranges: There is a lot of water, and the fiber content and vitamin C content of white silk are high, which helps metabolism. But due to the high fructose content, the daily intake should be controlled at 2.
4. Strawberry: It is rich in vitamin C, pectin and water, which helps digestion and defecation.
5. Jujube: It is rich in vitamins C, B 1, B2, various minerals and fibers, which can promote appetite and nutrient absorption, so that the body can maintain normal fat metabolism.