Candida is a silent epidemic in America due to antibiotics and our high sugar highly processed diets. It causes depression, fatigue, ADD, ADHD, foggy thinking, blood sugar issues, allergies, skin problems like eczema and psoriasis and whole host of other ailments, including type 2 diabetes and high blood pressure.
The medical community refuses to acknowledge our Candida problem because they make too much money off illness. It would be to their detriment to address the real underlying causes.
I highly suggest that you look into Candida overgrowth and water fasting as a cure.