These are 5 dangers you’re exposing to if you bite your nails:
1. Disease-Causing Bacteria
Your nails are the best place for bacteria developing including the potential pathogenic bacteria like Salmonella or E. coli.
So, when biting your nails you are actually inserting those bacteria in your mouth and through there in your entire body. From there it can cause various infections. The nails are harder to clean than your hands, which you can just wash with soap, so they are the perfect place for bacteria to stay.