Candida is the overgrowth of "bad" yeast in your body. While we all have good and bad yeast, diet and other nutritional of health issues can cause an imbalance that allows the bad yeast to take over, therefor invading your body and causing symptoms that can range from brain fog, sugar cravings, unexplained weight gain, skin or oral yeast infections, vaginal infections, mood swings, behavioral issues, and even in severe cases organ shutdown.