What is the indispensable nutrition of the human body?

There's a lot of water, minerals, proteins, and so on.

Nutritional deficiencies.

1. Reduced vision at night: increase the intake of foods such as carrots and pork liver. Both provide vitamin A in plant and animal form, respectively, with the latter being more efficiently absorbed.

It should be noted that vitamin A is a vitamin that dissolves in oil but not in water, so cooking carrots in vegetable oil can greatly improve the absorption efficiency of vitamin A compared with eating raw carrots.

2. Chapped corners of the mouth: possible lack of nutrients: riboflavin (vitamin B1) and niacin.

Riboflavin (vitamin B1) varies greatly from food to food. Animal liver, egg yolk, milk and other contents are relatively rich. Pork liver should be supplemented 1 time a week (2 3 taels), 250 ml of milk and an egg per day.

Vitamins are a class of small organic molecule compounds necessary for the maintenance of normal life activities of the body, including growth, development and reproduction.

Bridge cavity segments They are not the raw materials for the construction of body tissues, nor are they the ** of the energy required by the body. Although these compounds are structurally different, they all have commonalities. Some vitamins can be synthesized in the body, but the amount synthesized cannot meet the body's needs, so they must be consumed through the diet.

The human body needs a small amount of vitamins, but it cannot be absent or lacking. The three major nutrients of protein, carbohydrates and fats required by the human body are often tens of grams or hundreds of grams, while the human body has very little demand for vitamins, often calculated in milligrams or even micrograms. Although rarely, if for some reason the required amount is not obtained, the body will experience certain specific deficiency symptoms.

Therefore, attention should be paid to it. Vitamins are a large family, with more than a dozen members, which can generally be divided into two main categories: fat-soluble vitamins and water-soluble vitamins.

Fat-soluble vitamins dissolve in oils and fats, while water-soluble vitamins dissolve in water.

Fat-soluble vitamins include vitamin A (retinol), vitamin E (tocopherol), vitamin D (cholecalciferol), and life support.

Vegetarian K. Vitamin A and vitamin D can be stored in the body, and excessive accumulation can cause poisoning, so it should be injected.

Meaning. Water-soluble vitamins include B vitamins and C (ascorbic acid) as well as a number of "vitaminoids" (choline

inositol, etc.). Members of the B vitamin family are vitamin B1 (thiamine), vitamin B2 (riboflavin), vitamin B6 (pyridoxine), vitamin B2 (cyanodiamond), niacin (niacin), pantothenic acid, folic acid, and biotin.

Vitamins, in addition to being nutrients, are now also used as medicines. Scientists have found that vitamins in anti-cancer, anti-cancer.

Aging and cardiovascular and neurological diseases play a role, making a significant contribution to people's health.

The role of vitamins: Vitamins are important nutrients involved in human life activities. It can be said that if the human body does not have vitamins, the body cannot carry out life activities.

The daily vitamin requirement of the human body.

Vitamin A: Adults (men and women) need 2,200 IU a day.

Vitamin D: 300 400 IU a day can be consumed by a round person.

Vitamin E: Adults can consume 10 mg a day.

Vitamin B1: Adults generally consume milligrams a day, and their intake is proportional to calories, and women are correspondingly lower.

Vitamin B2: Adults generally consume milligrams a day, which is related to caloric supply. Approximately 2 mg of vitamin B2 per 4184 kilojoules (1000 kcal) of calories.

Niacin acid: Adults can consume 12-20 mg a day.

Vitamin B6: Adults can consume milligrams a day.

Vitamin B12: Adults can consume micrograms of vitamin B12 a day.

Folic acid: Adults can consume 400 mg a day.

Pantothenic acid: Adults can consume 10 mg a day.

Vitamin C: Adults can consume 60 mg a day.