Damaged enamel and chipped, weakened teeth are some of the side effects of regular nail biting, according to one dental specialist.

Writing in the Huffington Post, dentist Dr Thomas Connelly stated that although not everyone will experience problems, he often observes patients displaying evidence of harm caused by the habit.

Dr Connelly explained that due to the number of clients he treats who want cosmetic dentistry to fix their smile, he has plenty of evidence to draw the conclusion that there is a direct link between tooth damage and chewing fingernails.

“I’ve seen too much first-hand to ignore this, in my mind – and professional opinion – it’s a fact that nail biting can hurt your teeth,” he said.

Meanwhile, industry professionals have reported a rise in the number of individuals seeking treatment for problems such as sensitive teeth and worn away enamel caused by teeth grinding, according to Medical News Today.