Vitamin C has always been a sought after nutrient element. Many friends feel that regular consumption of vitamin C can strengthen the body, enhance immunity, and prevent the cold. Does vitamin C really have such amazing effects?
Ma Yanliang, chief physician, Department of Respiratory Medicine, Peking University People's Hospital: Vitamin C does not have a good preventive effect on the common cold. The common cold is a viral infection and most can heal themselves. Many people think that after taking vitamin C, a cold will soon heal. But even if you don't take any medicine, the symptoms of the common cold will disappear in about a week, so the individual's experience sometimes exaggerates the effect of the medicine.
Now that everyone is clear, it is actually wrong to say that vitamin C can prevent colds. So, who needs to pay attention to vitamin C supplementation?
Ma Yanliang, Chief Physician, Department of Respiratory Medicine, Peking University People's Hospital: First of all, there must be a basis for chronic inadequate intake. If there is no insufficient intake, it will generally not occur under normal diet, unless there are some absorption barriers. If gum bleeding occurs, skin ecchymosis symptoms, such as a large bruise on contact, will not heal for a long time, or there is a wound on the skin that takes longer to repair. In this case, vitamins must be considered. The lack of C.
Experts tell us that it must be supplemented in an appropriate amount. Adults generally require 100 mg to 1000 mg per day, and the maximum cannot exceed 2000 mg per day, otherwise it will adversely affect the body.
Ma Yanliang, Chief Physician, Department of Respiratory Medicine, Peking University People's Hospital: Under the condition that normal diet can be guaranteed, we don't recommend supplementing some dietary nutrients.
If you take too much vitamin C, you may first cause gastrointestinal upsets, such as stomach acid. Secondly, if taken for a long time, sudden withdrawal may also cause vitamin C deficiency. And sometimes it will inhibit the absorption of other normal nutrients.
In addition, excessive vitamin supplementation during pregnancy has adverse effects on pregnant women and the fetus. Experts also remind everyone that by maintaining a rich and healthy diet, you can generally obtain the vitamin C that the body needs without supplementing it intentionally.