A healthy human body must maintain a slightly alkaline state, with a PH value of about 7.3. If the human blood is acidic, blood viscosity and cholesterol are relatively high, people are prone to fatigue, while the body's resistance will decline. And meat dishes are almost all acidic foods (except milk, blood products), rich in protein, carbohydrates, fat, etc., the holiday diet should not eat only big fish and meat, there should be alkaline food to eat, in order to ensure the acid-base balance of the human body. The highest alkali content is kelp, followed by green lettuce, celery, shiitake mushrooms, carrots, radishes and so on.
Which of the following statements fits the context?
Human health is closely related to PH value