How Can I Stop My 5 Year Old From Biting His Nails?

Hi i have a boy of 5 years and he bites his nails. is there some thing i can do to stop him? pls.

Thank you for your comments. However I'm not sure whether you just want an answer to your question or do you want your comment posted on the nailbiting board?

So that is why I am posting this email here.