20
Oct
It may come as a surprise, but the dirtiest thing you put in your mouth each day might not be junk food—it could be your toothbrush. Despite its purpose to keep your mouth clean, your toothbrush could be a breeding ground for millions of bacteria and fungi, including some that are harmful and potentially deadly. A 2020 study published in Microorganisms found that a single toothbrush can harbor between 1 and 12 million microbial cells from hundreds of different species. These organisms form a biofilm on the bristles and even burrow into the tiny cracks in the brush stalk, thriving…
