What causes yeast infections? - Yeast Infection

Factors that may disturb the vagina's balance include:

Antibiotic treatments

Oral contraceptives

Hot weather or non-ventilating clothing, which increase moisture and warmth, fostering fungal growth

Repeated intercourse over a short period of time

Stress

Suppressed immune system (including HIV)

High carbohydrate intake, especially refined sugars and alcohol

Pregnancy

Diabetes

Other causes can be irritants such as soaps, powders, new detergents and other products