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Common Causes and Risk Factors of Oral Thrush

Cancer

Oral thrush is a common side effect of most cancer treatments. Cancer itself can cause yeast to grow in the mouth, but some medicines endorsed to treat cancer can lead to a severe case of oral infection. These treatments weaken the body’s mucous membranes and the immune system, making it difficult for the body to fight against infections. Developing oral thrush in the case of cancer depends on the type of cancer and the intensity of treatment.

Other factors that can cause oral thrush are certain medications like corticosteroids or antibiotics. These medications can disturb the balance the immune system keeps, causing the fungus to grow out of control. Babies can also pass the infection to mothers while breastfeeding. Also, stress, smoking, wearing dentures that don’t fit right can cause oral thrush.