November 18, 2025

How Often to Change Your Toothbrush for a Healthier Mouth

7 minutes

Most people need a new toothbrush every three to four months, although there are exceptions when the brush needs to be replaced earlier
Toothbrush contamination occurs naturally from biofilm, moisture, and bathroom aerosols, but you can minimize it by rinsing thoroughly after use, storing upright and uncovered, and keeping your brush several feet from the toilet
An electric toothbrush head follows the same three-month replacement cycle; replace it sooner if indicator bristles fade, the head feels rough, or cleaning efficiency drops
For safe sanitizing, consider soaking the head in 3% hydrogen peroxide for 10 to 15 minutes before air-drying. Avoid boiling, dishwashers, or alcohol-based soaks, which deform bristles and reduce cleaning ability
Here's a simple rule to follow: When the bristles splay or smell musty, or if you've been sick, it's time for a new toothbrush

...more

By Dr. Mercola

4.6

14851,485 ratings

November 18, 2025

7 minutes

Most people need a new toothbrush every three to four months, although there are exceptions when the brush needs to be replaced earlier
Toothbrush contamination occurs naturally from biofilm, moisture, and bathroom aerosols, but you can minimize it by rinsing thoroughly after use, storing upright and uncovered, and keeping your brush several feet from the toilet
An electric toothbrush head follows the same three-month replacement cycle; replace it sooner if indicator bristles fade, the head feels rough, or cleaning efficiency drops
For safe sanitizing, consider soaking the head in 3% hydrogen peroxide for 10 to 15 minutes before air-drying. Avoid boiling, dishwashers, or alcohol-based soaks, which deform bristles and reduce cleaning ability
Here's a simple rule to follow: When the bristles splay or smell musty, or if you've been sick, it's time for a new toothbrush

...more