Can vitamin c be eaten often? Listen to the pharmacist.

Vitamin C, also known as ascorbic acid, is a water-soluble vitamin, which mainly participates in the normal metabolism of protein, carbohydrate and fat in human body. It cannot provide energy, nor can it form tissues and organs. However, our body can't synthesize important trace organic substances that can promote the conversion of all substances into energy, and we must always supplement them through diet. The demand for vitamin C in human body is very small. However, they play a very important role in human metabolism, growth, development and health. Once lacking, it will lead to the corresponding vitamin C deficiency and cause health damage. Special people such as simple diet, improper cooking methods, improper food storage, gastrointestinal diseases, pregnant women and children are prone to vitamin C deficiency, so special attention should be paid.

First of all, vitamin C can promote the formation of collagen, inhibit the damage of ultraviolet rays, and have whitening and anti-aging effects. However, taking vitamin C is difficult to achieve the effect of beautifying the skin. This is because after taking vitamin C orally, the drug is distributed to various tissues of the whole body with blood circulation, and it is difficult to form a high concentration under the local skin, and the effect can be imagined. Secondly, vitamin C can maintain human immune function and shorten the course of cold, but it can't relieve cold symptoms or prevent colds. Finally, vitamin C has a good effect on maintaining normal nerve function, promoting the absorption and utilization of iron, calcium and folic acid, regulating blood lipids and preventing the generation of carcinogens such as nitrosamines.

Vitamin C mainly exists in fresh dates, strawberries, kiwifruit, hawthorn, tomatoes, green peppers, Chinese cabbage, citrus fruits and other natural foods. Healthy adults need 65,438+000 ~ 200mg of vitamin C every day. Eating 75g sweet pepper, half guava, two kiwis, 150g strawberry or 50g fresh jujube can meet the daily needs of human body. If the daily intake of vitamin C exceeds 1g, it may cause nausea, vomiting, headache, diarrhea, abdominal pain, frequent urination and other adverse reactions. Therefore, vitamin C should be used under the guidance of a doctor and should not be taken for a long time.

In a word, vitamin C is a water-soluble vitamin necessary to maintain human growth and metabolism, which has antioxidant effect, can prevent atherosclerosis, cataract, anemia and cancer, and can participate in maintaining the normal functions of nervous system, immune system and skin. The body cannot synthesize itself and needs to be supplemented by diet. Healthy people who can eat normally do not need to supplement every day. Vitamin C should be taken under the guidance of a doctor to avoid adverse reactions.