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9 Reasons Why Biting Your Nails Is Horrible For Your Health

By Karly Carpena
March 23, 2016

I hate to admit it, but I bite my nails and I’m assuming if you are reading this post then you do to. It is a difficult habit to break and one that can be harmful to your health. Here are 10 horrifying facts that will help you stop biting your nails…

1 There are all kinds of deeply wretched germs crawling under your fingernails.

Fingernails can house various types of bacteria and fungus. One particularly prevalent germ found under nails is Staphlococcus aureus, which can cause a load of crazy skin infections like boils and abscesses.


2 The more you suck and chew on your fingernails, the more they become an even greater bacterial paradise.

Back in 2007, Turkish scientists tested 59 people to see whether nail biting had any real effect on transporting bacteria to the mouth. They swabbed each person’s mouth for saliva to check for diarrhoea and vomiting bacteria such as Escherichia coli. And guess what? Seventy-six per cent of those who bit their nails tested positive, compared to just 26.5% of non-biters.