Is it normal to eat your nails?
Mostly.Normal for most people
Yes—biting your nails and sometimes swallowing the bits is a common habit. It’s usually harmless, though frequent biting can irritate your skin or damage your nails and teeth.
Lots of people bite their nails when they’re bored, tense, focused, or simply doing it without noticing. Swallowing small nail bits usually isn’t a problem, but nails can carry dirt and germs, and biting can leave the skin around them sore or damaged.
If you’d like to stop, keeping your nails trimmed or giving your hands something else to do can help. If biting is causing repeated bleeding, pain, or infection, get it checked.