7.Dementia
Although your tongue is what tastes things, it’s your brain that tells you what flavor it is. Dementia can affect the parts of your brain that control this. When they don’t work right, you might have a metallic taste in your mouth.
8.Cancer Treatment
Radiation and chemotherapy can give you a bitter or metallic taste in your mouth. You can ease the problem some by brushing your teeth well and keeping your mouth clean with rinses. The side effect typically goes away once you’re done with your treatment.
