Oral thrush is a form of yeast infection. The infection thrives in the warm climate of the mouth, which is a prime area that stays moist. Though oral thrush is usually a mouth infection found in babies and the elderly, it can be corrected with the proper medication and diet control.
Diet has much to do with aiding bodily functions, including the immune system and keeping yeast growth under control. Besides diet, the other factors that can influence yeast overgrowth include: dental plates, pregnancy, antibiotics, contraceptive pills, chemotherapy, endocrine conditions, iron deficiency, and an underlying skin disease.