Among all kinds of foods we eat every day, if a certain food is decomposed and metabolized in the body and transformed into minerals mainly containing acid ions such as chlorine, sulfur and phosphorus, it should be called acidic food; On the contrary, if it is transformed into minerals mainly containing alkaline ions such as potassium, sodium, calcium and magnesium, then this kind of food should be called alkaline food. Therefore, the acidity and alkalinity of food can not be judged by our taste. For example, lemon tastes sour, but it belongs to alkaline food, while cereals, meat, poultry, fish, eggs, peanuts, walnuts and so on. They are all acidic foods, while vegetables, fruits, soybeans and their products, potatoes, milk and tea are all alkaline foods.
Some foods, such as refined oil, sugar, starch, alcohol and salt, are also called neutral foods because they do not contain any minerals or contain the same amount of alkaline ions and acidic ions. The PH value of human body will fluctuate with the type and quantity of food we eat every day. If the intake of acidic food is too much, which exceeds the amount needed by the human body, then the PH value of the human body will be acidic. In fact, it is easy to eat too much acidic food every day, because our staple food is acidic, and the rich chicken, duck and fish on the table makes it too easy to ignore the intake of vegetables and fruits. As a result, while people are eating and drinking, acidic physique gradually forms. Therefore, in order to keep the human body's PH within the normal range and keep healthy, our diet structure must attach importance to the scientific collocation of acidic food and alkaline food, so as to achieve the human body's acid-base balance.
One thing to note is that although neutral food does not affect the body's pH in the body, if it is ingested too much, it will easily lead to excess calories, leading to hyperlipidemia or obesity. However, excessive salt intake is easy to induce hypertension and is not good for the body. So, how should we eat and how much should we eat every day?
1. Foods that constitute a reasonable diet must be varied, including cereals, beans, vegetables and fruits, as well as animal foods and oils. For cereals and wheat, we normal people should eat about 300 ~ 500 grams a day. At the same time, we should also advocate eating coarse grains and appropriately increase the intake of coarse rice, coarse grains, sweet potatoes, potatoes and other foods.
2. Eat more fruits and vegetables. You can eat 400-500g of vegetables every day, of which leafy vegetables account for at least 1/2, and "red, yellow, green, white and black" vegetables should be eaten in turn; You can eat 100 ~ 200 grams of fruit every day.
3. Eat not less than 250 ~ 500 grams of milk and its products every day; Soybeans and their products can also eat about 50 grams a day.
We can eat 125 ~ 200 grams of animal food such as meat, fish and eggs. Every day, but it is best to reduce the intake of pork and choose more varieties such as chicken, fish, rabbit meat and beef. Also, each of us needs to eat some animal viscera in moderation to supplement various trace elements in the body.
5. Eat less salty, smoked and fried food, especially avoid eating too greasy. In addition, the daily salt intake should not exceed 6 grams, that is, the daily diet is mainly light.
6. Drinking should adhere to the principle of moderate and low alcohol. The daily consumption of wine should be controlled within 100 ml, beer within 300 ml and liquor within 25 ml.
To sum up, if we adhere to a reasonable diet structure in our daily life, make the PH value of our body weakly alkaline, and guide our lives according to the advice of the World Health Organization (WHO) on moderate exercise, smoking cessation and alcohol restriction, and psychological balance, then various diseases may be far away from us, and health and longevity will no longer be empty talk.