Generally, non-metallic elements such as nitrogen, sulfur and phosphorus are acidic foods, while metallic elements such as sodium, potassium, calcium and magnesium are alkaline foods. (Tofu, milk, celery, potatoes, bamboo shoots, mushrooms, carrots, kelp, mung beans, bananas, watermelons, strawberries, etc. are all alkaline foods.) "What tastes sour is sour food. It should be understood that all sour fruits and bean products are alkaline foods rather than acidic foods, while sugar, chicken, duck, fish and meat are all acidic foods. Weakly alkaline foods include: tofu, peas, soybeans, mung beans, rape, celery, sweet potatoes, lotus roots, onions, eggplant, pumpkins, cucumbers, mushrooms, radishes, milk and so on. The alkaline foods are: green vegetables, spinach, potatoes, cucumbers, soybeans, kelp, strawberry cabbage, cabbage, lettuce, carrots, bamboo shoots, potatoes, citrus, watermelons, grapes, bananas, millet, persimmons, coffee, wine and so on. There are also some foods that people mistakenly regard as acidic foods because they taste sour, such as mountain plants, tomatoes, vinegar, etc. In fact, these things are typical alkaline foods. It is found that eating more alkaline food can keep the blood weakly alkaline, reduce acid substances such as lactic acid and urea in the blood, and prevent them from depositing on the tube wall, thus softening blood vessels. Therefore, some people call alkaline food "a cleaner for blood and blood vessels". The acidity and alkalinity mentioned here is not the nature of the food itself, but refers to the nature of the elements left in the body after the food is digested and absorbed, and the cation or anion produced by the food after digestion, absorption and metabolism is dominant. Common acidic elements are nitrogen, carbon, sulfur, etc. Common alkaline elements are potassium, sodium, calcium, magnesium and so on. Some foods taste very sour, such as tomatoes and oranges, but they are all strongly alkaline foods, because the final element after their metabolism in the body is potassium. Lemon, citrus and carambola taste sour, but after metabolism, organic acids become water and carbon dioxide, and the latter is exhaled from the body through the lungs, and the remaining cations are dominant and still belong to alkaline food; Similarly, although meat, fish, eggs and rice noodles are not sour, they produce more anions after metabolism and still belong to acidic foods. Therefore, it is impossible to distinguish acidic or alkaline food from its taste.

Meat is acidic food, and vegetables and fruits are salty, so we should eat more vegetables and fruits, because healthy people's bodies are weakly salty, and if they are acidic, they are prone to get sick.

Strongly acidic food: egg yolk, cheese, dessert, sugar, tuna, flounder.

Acidic food: ham, bacon, chicken, pork, eel, beef, bread and wheat.

Weakly acidic food: white rice, peanuts, beer, seaweed, octopus, chocolate, hollow powder and onion.

Strongly alkaline foods: grapes, tea, wine, kelp, citrus, persimmons, cucumbers and carrots.

Moderately alkaline food: soybean, tomato, banana, strawberry, protein, prune, lemon, spinach, etc.

Weak alkaline food: red beans, apples, cabbage, tofu, cabbage, rape, pears, potatoes.

Alkaline foods are mainly divided into

1. Vegetables and fruits;

Second, seaweed;

Third, nuts;

4. Cereals and beans that have sprouted.

Avoid or reduce the intake of the following acidic foods:

First, starch;

Second, animal food;

Third, sweets;

4. Refined and processed foods (such as white bread);

5. Fried food or cream;

Six, beans

Acidic food:

Vegetables-Asparagus beans (dried) Xiao Gao Reina

Fruit-Banana (immature) Olive (immature and pickled) Storage Fruit (frozen canned fruit, candied fruit, dried and bleached preserved fruit) Plum (slightly acidic) Dried plum (slightly acidic)

Dairy products-cream cheese ice cream milk (except fresh milk)

Meat-all meat, fish and chicken.

Cereal-Wheat-Barley Bread (made of various flours) Corn (the part that grows outside the ear axis) is connected with the heart.

Noodles, cereal, rice

Tree fruit-fruit on other trees besides the above.

Others-wine, candy, cocoa, chocolate, Coca-Cola and other cool drinks, salad dressing, spice vinegar.

Alkaline food:

Vegetables-beans (eat pods and green beans) Green cauliflower cabbage carrot celery cucumber eggplant chicory garlic leek lettuce onion parsley pepper (green, red) radish potato spinach pumpkin.

Fruit-apple, apricot, banana (ripe) strawberry, cherry, vinegar fruit, jujube, coconut, fig, grape, grapefruit, lemon, nectarine, orange, papaya, peach, pear, pineapple (ripe) raisin and tomato.

Dairy products-fresh milk (human, cow and sheep milk)

Meat-(no)

Tree fruit-almond chestnut (fried) cocoa coconut (fresh)

Grain-corn

Others-Coffee, honey, seaweed, snacks with baking powder.