What is the reason for the small pits on the nails?

Generally, the surface of nails is relatively smooth. If small pits appear on the surface of nails, you should pay attention to whether you have any disease. For example, nutritional status, cold body, anemia, etc., so you must understand your physical condition in time.

1. Oxygen deficiency

Oxygen can reduce the partial pressure of oxygen in the human body's arterial blood, thereby causing oxygen in the peripheral blood circulation, disrupting the nutritional metabolism of the nails and causing nail depression.

2. Heavy physical labor

The intensity of labor also has a certain impact on nail depression. Among people with small pits on their fingernails, there are more people who do heavy manual labor than those who do light manual labor.

3. Nutritional status

Iron deficiency anemia and Raynaud's disease, which causes acromial ischemia, can both cause nail pitting. This shows that nails have a certain relationship with nutrition.

4. Long-term exposure to cold water

Long-term contact of fingers with cold water, spasm of peripheral blood vessels and direct immersion of nails in cold water may also be the causes of nail depression.

5. Cold Factor

The incidence of nail pitting in long-term outdoor work is significantly higher than other types.

6. Cysteine ​​metabolism

Some people also believe that anti-A may be caused by abnormal cysteine ​​metabolism.