How GLP-1 Affects Your Mouth
GLP-1 medications work by slowing gastric emptying and reducing appetite. This mechanism creates several downstream effects that can influence oral health:
Reduced Saliva Production
One of the most common complaints among GLP-1 users is dry mouth (xerostomia). When your mouth produces less saliva, you lose saliva's natural protective functions — namely, washing away food particles and neutralizing acids that erode tooth enamel.
Saliva also contains antimicrobial compounds that help control harmful bacteria. Without adequate saliva flow, you're more vulnerable to tooth decay and gum problems.
Gastroesophageal Reflux (GERD)
GLP-1 medications slow digestion, which can increase instances of acid reflux. Stomach acid that travels up into the esophagus and mouth can erode tooth enamel over time. Patients already prone to reflux may notice accelerated dental wear.
Appetite Suppression and Nutrition
When you're eating significantly less, you might also be getting fewer nutrients that support oral health — particularly calcium, vitamin D, and phosphorus. These minerals are essential for maintaining strong tooth enamel and bone density in your jaw.