Wow, I’m so glad to have found this posting! I’m a male in my late 30’s. My dental problems didn’t really surface until after I quit taking Propecia. I took the drug for 5-6 years. I’ve been off it for a little more than a year now, and although I have excellent dental hygiene (brush twice, floss once daily), I think I had 5 cavaties in the past year (3 were substantial, at the gumline. 2 were very minor pit cavaties). I’m confident that the cause of the cavaties is due to reduced saliva production aka xerostomia. I’m almost always thirsty and have to carry a bottle of water everywhere I go. My electrolytes have checked out fine. With negative blood test results for auto immune disorders, such as Sjogren’s, my doctor is a little stumped. Blood tests over the past year revealed that I have subclinical hyperthyroidism. I’ve found many references to Propecia affecting the thyroid and endocrine system, however, I’ve been looking for indications that it might have affected my exocrine system, specifically the salivary glands. I’ve also tried to pay closer attention to my diet and digestive system, since I know it is all related. Digestion is basically normal, although I suspect I’ve had issues w/ mild Candida overgrowth. I try to eat whole foods often, and have limited my intake of sugars and gluten products. FWIW, I tend to sweat less frequently than others too. If anyone has any thoughts or suggestions, I’d welcome any replies.