1, vitamin c deficiency leads to collagen synthesis disorder, capillary wall integrity is destroyed, and its brittleness and permeability are increased. When the venous blood flow is under certain pressure, the capillary can rupture and bleed, and the number of bleeding points can reflect the degree of capillary damage.

2. Maintain immune function, hydroxylation and serotonin, maintain vascular integrity and promote the absorption of non-heme iron. At the same time, vitamin C also has the effects of antioxidation, anti-free radical and inhibition of tyrosinase production, thus achieving the effect of whitening and removing spots.

3. Vitamin C is an effective antioxidant, which can reduce the oxidative stress of ascorbate peroxidase in human body. Vitamin C is also involved in many important biosynthesis processes.

Extended data

Foods containing vitamin c

Vegetables contain more vitamin C, such as Chinese cabbage, rape, rape moss, purple cabbage moss, amaranth, celery and so on. These foods are very common in our life, so we might as well eat more appropriately.

The content of vitamin C in fruits is also very rich, such as fresh dates, red fruits, grapefruit, oranges, oranges, lemons, strawberries, persimmons, mangoes, kiwis and longan. But the most noteworthy problem is that the vitamin C content in some wild fruits is many times higher than that in ordinary fruits, among which the most common ones are Rosa roxburghii, pomegranate and Rosa laevigata.

Baidu Encyclopedia-Vitamin c- Drug Action