The 90-Day Rule: Change Your Brush, Protect Your Pancreas

Your toothbrush may have a more direct line to your pancreas than you think. Experts warn that the bacteria building up on your old toothbrush can trigger a chain reaction that affects how your body manages sugar, directly impacting your diabetes risk.
This all stems from a “two-way relationship” between your mouth and your metabolism. A dental specialist explains that high blood sugar weakens your immune system, making your gums a prime target for infection. As these infections thrive, they release toxins that interfere with insulin’s ability to regulate glucose.
This process starts with poor hygiene. When the 700 types of bacteria in your mouth are allowed to multiply, they form plaque and cause inflammation. This inflammation creates a pathway for bacteria to enter the bloodstream, where they can travel to the pancreas and liver, signing “low-grade inflammation across the body.”
This same inflammatory response is also a major threat to your heart. Chronic inflammation from the gums can lead to stiff, narrow arteries (atherosclerosis), a condition that dramatically increases heart disease risk.
The key to breaking this “vicious cycle” is simple. Replace your toothbrush every 90 days. An old brush with frayed bristles is ineffective and becomes a collection point for germs. A fresh brush is a critical tool for interrupting the biological chain reaction that links your mouth to systemic disease.