Health Instructions

Toothbrushes and bathroom showers are full of microscopic, invisible bacteria

Toothbrushes and hot showers are full of microorganisms, some of which have not been seen under a microscope, according to a new study.

Researchers at Northwestern University sampled 32 toothbrushes and 92 showers across the United States and found hundreds of species They have never been seen under a microscope before.

"Toothbrushes and showers are hiding places for hundreds of species of organisms and bacteria," said Erica Hartman, lead author of the study.

Hartman said the presence of bacteria and germs in toothbrushes and showers is not a concern, but cleaning should not be neglected.