There is indeed a distinction between the parts and organs of the human body, and this acidity and alkalinity is different in all parts of the body and in all stages of life, but they are all in the dynamic balance of that stage or part. But the acid-base constitution is incorrect.

The PH value of human blood is between 7.35 and 7.45, with PH 7 as the neutral boundary, and the blood is weakly alkaline. The PH value of human urine is around 6.0, so the urine is acidic. The PH value of human gastric juice is between 1~3, which is related to the food in the stomach and fluctuates, belonging to strong acidity. The PH value of human saliva is around 7.0, which is a relatively neutral environment.

In general, we take human blood as the neutral boundary value of the pH value of the whole human body fluid. Below 7.35, it can be defined as acidity. If the concentration of uric acid in blood is greater than 7 mg/dl, the body fluid will be lower than 7.35, and the pH value measured in blood and urine of 99% ventilated patients is lower than normal.

Acidic food Speaking of acidic food, it actually comes from the theory of human acidity and alkalinity. Acidic and alkaline foods are not classified according to the acidity of the food itself, but are determined by the properties of inorganic salts formed in the body after digestion and metabolism.

Why is meat an acidic food?

Because they usually contain more nitrogen (N), sulfur (S) and phosphorus (P), they will form acidic free radicals after digestion and metabolism, such as sulfate ion (SO4), nitrate ion (NO3) and phosphate ion (PO4), and most of them are acidic. Of course, acidic foods also include foods rich in fat and sugar.

People think that what tastes sour is not acidic food. Such as lemon, orange, etc. These foods contain organic acids, but when these organic acids enter the body, they will soon be neutralized and excreted, leaving mineral cations combined with organic acids, most of which are alkaline. This also includes vinegar.

Don't be superstitious about health care products when catering. It is good to increase the proportion of alkaline foods such as fruits and vegetables, but we should also give an appropriate proportion of acidic foods such as protein to meet the needs of the body. From the point of view of nutrition, the reasonable combination of acidic food and alkaline food is very important to maintain good health. Recommend the 28 principle, that is, alkaline foods such as vegetables and fruits account for 80%, and acidic foods account for 20%.

Welcome to pay attention to Dr. Myrrh!