A semi-circular or curved white area at the root of the nail, this is the crescent, and a white half-moon of the nail is a normal sign. The lunula is a crescent-shaped, light-colored area near the nail root. The nail root is constantly making new keratin cells. The newly made keratinocytes will push the previous generation of keratinocytes forward, and the keratinocytes will gradually push forward. It will be squeezed flatter and flatter and then the cell will die and harden as it dies and this is the nail. If there is a white crescent on the nail, the nail is usually considered to be overgrown and lacking blood vessel distribution at the root of the nail. This condition is usually not a major problem. It is a normal physiological phenomenon and therefore does not require special treatment. Some people will have richer local blood circulation, so there is no white crescent. Therefore, there is no direct relationship between the presence or absence of crescent whites and the health condition of the body, so don’t pay too much attention to it. In your daily life, you can eat some fresh vegetables and fruits, which can replenish the role of vitamins in the body. And to maintain adequate sleep, avoid staying up late, but also drink more water, and also do some appropriate exercise, such as running, can enhance their own resistance.