The crescent-shaped whitish area of the bed of a fingernail is a very important and sensitive nail part and you should be very careful not to damage it.
This whitish half-moon is called lunula (small moon in Latin) and it’s a very sensitive part of the nail. The lunula is actually the visible part of the nail’s root and should not be damaged in any way because if you damage it your entire nail will be permanently deformed.
However, if you just damage the rest of the nail and it falls off or is surgically removed the lunula will remain intact in its place.
It’s most visible on the thumb but not everyone’s lunula is visible. In some cases, the eponychium, the thickened layer of skin surrounding fingernails and toenails, may partially or completely cover the lunula.
In alternative medicine, it’s believed that the lunula can reveal some very important information about our overall health.
Traditional Chinese medicine believes that a lack of lunula indicates anemia and malnutrition while a pale or bluish lunula indicates possible diabetes. If a person’s lunula has reddish smudges he or she may be suffering from cardiovascular diseases.
A lack of lunula or a really small lunula usually indicates digestion issues which can happen due to slow metabolism and toxin overload in the body.
Source: Super Tasty Recipes