In a healthy state, the human body is generally not affected by food intake, resulting in changes in acidity and alkalinity. At present, many statements about "food acidity and alkalinity" are basically gimmicks of merchants, not scientific concepts.

The pH of human body refers to the pH of blood. Under normal physiological conditions, the acid-base imbalance of human body is not easy to occur, and there is no so-called "acidic constitution". The blood of healthy people is weakly alkaline, and the PH value is about 7.4. If the acidity or alkalinity of the body is temporarily enhanced, the respiratory system will react within a few minutes to accelerate or slow down the discharge of carbon dioxide (acidity), thus adjusting the pH value to the normal value within a few minutes. The urine excretion system and blood system of the kidney will also adjust the PH value through a strong balance, regardless of whether the human blood is acidic (pH

It is an important principle to emphasize the diversification of food and ensure the reasonable collocation of meat and vegetables. Various foods contain different nutrients, have different health care functions and play different health care roles, which is irreplaceable. Only when we live in harmony can we finally get the greatest health benefits. And blindly pursuing so-called "alkaline" food and abandoning "acidic" food can only go from one extreme to the other, resulting in new imbalances. In the long run, the ultimate damage is health.