L reed, nd, the half moons at the base of your fingernail is an indicator of good thyroid health Each nail that is missing a half moon indicates a weaker thyroid. Their color can sometimes signify underlying conditions. What does an absence of fingernail moons indicate The technical term for the half moon on your fingernails is lunula, which literally means “little moon” in latin In ayurvedic medicine, the ancient indian “science of life,” the lunula represents one’s “agni” or “fire” within the body.
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