“If you have your toothbrush too close to the toilet,” microbiologist Charles Gerba, PhD, tells WebMD, “you are brushing your teeth with what’s in your toilet.” He explains that when you flush with the lid open, contaminated water vapor settles on surfaces in your bathroom. And that’s not the only way germs pollute your toothbrush.
Health Tip: Don’t Spread Germs at Work
Brushing your teeth removes bacteria, food debris, and blood and saliva that might be infected with a virus. If you don’t rinse the bristles properly, you will be putting these contaminants right back into your mouth the next time you brush. Many families store their toothbrushes jammed together in a cup or holder, which can also cause cross contamination.