what cause yeast infection
Several factors can cause a yeast infection, including: 1  antibiotics (they lower the amount of lactobacillus, or good bacteria, in the vagina) 2  pregnancy. 3  uncontrolled diabetes.  weak immune 1  system. poor eating habits, including a lot of sugary foods.  hormonal imbalance near your menstrual 1  cycle. stress.  lack of sleep.
Most yeast infections are caused by a type of yeast called Candida albicans. A healthy vagina has many bacteria and a small number of yeast cells. The most common bacteria, Lactobacillus acidophilus, help keep other organisms-like the yeast-under control.