1. There are all sort of germs crawling in your finger nails that could enter your
2. Sucking and chewing makes your nails a good site for worse chemicals.
3. It causes you dental issues
4. It contributes to bad breath
5. Nail biting can lead to oral STI
6. Biting of nails can destroy your nails and gum
7. It can lead to tooth grinding at night
8. Constant chewing/biting can make the nails to fall off, stop to and grow. In the long run lead to acral lentiginous subungual melanoma