No, nail biting is a nervous habit. Example; someone who bites their nails my have anxiety, nervousness about something. If you take notice when you seem to bite your nails the most, then you can make changes as needed. Maybe when you listen to the news on the radio or TV it makes you uptight and sometimes even angry. Try not watching it as much. This really works. It is not a vitamin deficiency but just a bad habit like, biting ones lip, chewing on the inside on your mouth, taping your finger on the table, there are so many habits that humans create for themselves.
do not bite nail,nail biting is also known as onychophagia
All of the episodes of "The Perils of Pauline" depicted her nail-biting adventures.
There is a liquid like nail polish that prevents you from biting them because it tastes terrible
Nail biting is usual an indication of some inadequacy problems. It is also caused by stress or tension or insecurity. Once these problem is recognized and dealt with controlling nail biting will be easier.
Onychomycosis (onych/o means finger or toe nail, myc means fungus, and osis means abnormal condition).
Eggshell nails are caused by a deficiency of essential vitamins and nutrients in the nails matrix. Vitamin supplements and proper nutrition will help the nail to grow healthier.
Iron deficiency anemia Plumber Vinson
If the top layer of your nail is falling apart, you might have a vitamin B deficiency. You could also lack minerals that make your fingernails strong. You might also be having a reaction to a chemical that you touched.
Put nail polish remover on your nails. It tastes awful.
Nail issues can often indicate a vitamin deficiency. White spots indicate a lack of Calcium, small vertical ridges indicate a lack of Potassium.
onychophagia
go down to your nearest drug store and by nail polish remover keep wiping it on them after a bit they will have stoped biting there nails