1. Intestinal yeast overgrowth:
Intestinal yeast overgrow is extremely common, and it is usually caused by frequent or long-term antibiotic use. The most common scenarios are – many rounds of antbiotics as a child for ear or tonsil infections, long-term antibiotic use for acne (tetracycline or minocin), or antibiotics for frequent urinary tract infections. Antibiotics alter your digestive flora, allowing yeast which are an opportunistic organism, to take over.