I raised a bit of a ruckus last week at a women’s business network meeting when I asked a panel of health experts if having no fingernail moons meant you were low in iodine, and hence, more likely to develop early breast cancer. No one really knew the answer to my admittedly obscure question, but everyone became interested in looking at their fingernails and comparing them to their neighbors. Because people found this topic so fascinating, I decided to hunt down the answer.
What do moons on your fingernails mean?
Moons on your fingernails are located at the base of your fingernails, closest to your fingers. They are the lighter half moon shaped growth under your nails. In palmistry, overly large moons can mean an overactive thyroid and high blood pressure. Small or no moons are thought to predict an underactive thyroid and low blood pressure. Scientists have found that a lack of a fingernail moon may indicated you are low in Vitamin B-12 or in iodine which feeds the thyroid. Vitamin B-12 deficiency has been linked with lack of energy, depression, and loss of coordination and memory, among other things. Iodine deficiency has been linked with breast cancer. One palmistry specialist determined there is a link between small moons and carbon monoxide exposure.
What You Can Do:
Small or No Moons: have your iodine and Vitamin B-12 levels checked. Have your thyroid function and blood pressure checked. Vitamin B-12 deficiency is very rare except in vegan children, so you don’t need to rush out to get your levels checked unless you are also experiencing symptoms of B-12 deficiency. Reduce your carbon monoxide exposure by staying more than 20 feet from the car in front of you, not idling your vehicle, and when in traffic using the “internal air circulation” setting on your heater, vent and air conditioner.
Large Moons: have your blood pressure and thyroid checked. It’s a little more difficult to tell if your moons are overly large, so if your blood pressure and thyroid have been normal, there is no need to panic.