Well, most experts agree that biting your nails is not great for your health. The most obvious reason is that our hands often touch unclean surfaces. So, no matter how often you wash them, they can still transfer bacteria to your mouth. As a result, the chances that you’ll catch a cold or other infection increase.
Furthermore, if you bite too much, you can cause an infection of the skin surrounding your nails, too. Those with the habit know only too well how painful this can be. Indeed, the skin turns red, swells and then just plain hurts.
Moreover, it gets worse. Have you ever bitten a nail near to a wart on your finger? Well, most people don’t realize that this increases the chances of warts spreading to other parts of your hand. Indeed, Dr. Rochelle Torgerson, a dermatologist at the Mayo Clinic, told The Huffington Post, “The more open skin you have, the more you’re going to spread.”