Here is how the half moon shape on the nails tells about the health of a person

2 How can it tell about a person’s health?

The lunula may not be visible in each and every person. Sometimes a thick layer of skin that surrounds the base of fingernails may cover the lunula. But Chinese medicine for centuries has believed that if a person lacks lunula on any of the fingernails, it means that the person is battling anemia and is suffering from malnutrition. But if the lunula was pale bluish in color then it was a sign of diabetes. If it has red colored smudges or color, it may be something serious like heart disease or blood disorder. If the lunula is not present or is very small, then you might suffer from indigestion and bowel problems. To also means that you need to detoxify the body and take measures to improve your metabolism. If the person is suffering from a disease, the shape of the lunula will become distorted from its usual half moon shape, until the person gets better. The lesser the lunula is visible, the lesser physically fit the person is and it also means he has less energy. Also if the lunula is only visible on the thumb, it is a sign of impending arrival of a disease and you should take preventive measures. So keep an eye on the lunula of the fingers and thumbs to check for your health.

Image Source: www.neuperlach.org