Well how about that

Canker sore drug helps mice lose weight without diet, exercise

In the study at the University of Michigan, researchers gave mice a high-fat diet, and they became obese. They then injected the animals with a drug called amlexanox, which has been on the market for more than 15 years to treat canker sores. The mice lost weight, even though they kept eating the same number of calories. When they were taken off the drug, the mice gained all the weight back.

Well me oh my.   A drug that improves oral health reduces obesity.   I gotta look into this.