Look at your fingernails, did you notice a white half-moon shape that starts at your nail beds? In fact, it is a very important part of the nail. That little area is called the “lunula,” Latin for “little moon.” and it’s more than just a built-in design element — it actually says a lot about your health.

In traditional Chinese medicine, the lunula is viewed as a barometer of one’s health. The condition of the lunula really is an indication of your health. When your health declines, it is manifested in changes to the lunula, or the disappearance of it altogether. And when your health is restored, your lunula returns to its original condition.

What does it say about someone’s health — both the lack of it or the presence of it?

According to medical experts, having 8 to 10 milky white lunulas on both hands means that everything is alright with your health. The whiter the lunula, the stronger the health.

Here are some observations about the condition of the lunula and what it could mean for your overall health:

Normal Lunulae

• The less lunulae a person has, the lower the energy, overall health, and immunity. If you have lunulae on the thumbs only, you lack physical energy and may get sick easily.

Missing Lunulae

• One study has shown that missing fingernail moons are associated with various systemic disorders. These include issues with your thyroid or pituitary gland, iron deficiency, chronic renal failure, depression, and possible B-12 deficiency. We recommend having your iodine and Vitamin B-12 levels checked, as well as your thyroid function and blood pressure.

In summary, the lunula is considered a sign of how healthy you are. Therefore, any change should be taken seriously and get checked. Ensuring the health of your lunula can contribute to your overall well-being. So pay attention to your nails and take care of yourself!