Warning Here's when you have to change your toothbrush.

According to a recent study, the toothbrush contains more than 10 million bacteria, including E. coli and stalyloccus.

There are 100,200 species of bacteria that live in your mouth and they all end up in your toothbrush.

Shocking, isn't it? But there are even more shocking facts.

So if you keep your toothbrush three feet [1 m] near the toilet, the tiny drops of water you spray every time you close the toilet lid can reach your toothbrush.

But what do you need to know about your toothbrush?

You shouldn't share your toothbrush with anybody.

Once you've finished using your toothbrush, you have to wash it completely, and once a week disenect it with vinegar.

Change your toothbrush every 2-3 months.