What Could Cause Yeast Infection? 14 Possible Triggers (List)

Weak Immune System

A healthy immune system is the first line of defense against diseases. However, when your body is not well, your immune system will weaken, making you vulnerable to diseases. A weakened immune system means you are likely to fall ill and be infected with fungus or yeast infection.

When a person has a weakened immune system and is taking antibiotics, the bacteria and yeast can destroy the good bacteria and yeast that normally keep it in balance. This allows the Candida albicans fungus to grow out of control and can cause symptoms such as vaginal itching, burning during urination, discharge from the vagina or penis, abdominal pain, and other symptoms.

For instance, a woman’s immune system is at its strongest before puberty, when she has not yet encountered many bacteria and other microorganisms that can cause illness. As she grows older and her exposure to pathogens increases, her immune system becomes less effective at fighting off new infections. 

Pregnancy and breastfeeding weaken an already vulnerable immune system even further because of the added strain on the body caused by hormonal changes and additional blood volume. In addition, the lowered immunity resulting from menopause leads to many women having more frequent yeast infections than in their younger years when their bodies were usually strong enough to fend off foreign invaders.