Is tooth grinding healthy?

It is harmful: Teeth grinding is a harmful para functional habit. Consult your dentist for appropriate treatment, to eliminate / reduce harmful effect of teeth grinding.

No, : Tooth grinding is very common and very unhealthy for your mouth and jaws. It can cause tooth destruction which in turn causes tooth loss; gum recession or damage to ligaments holding teeth causing tooth mobility and loss; muscle fatigue and pain, headaches, tooth pain, and joint problems. See a dentist about possibly starting splint therapy.

No: Should see a dentist and possibly get to source of the grinding or have a custom mouthpiece constructed. If the teeth are worn down, this will change your bite, which in turn can cause muscle and TMJ problems.