Some groups in particular are at greater risk to develop oral thrush, including the following:

Babies

Diabetics whose diabetes cases are not well controlled

Denture users

Individuals taking antibiotics or corticosteroids

Individuals with an immune deficiency (such as HIV/AIDS and chemotherapy patients)

Individuals with new oral piercings who have usual contact with yeast

Individuals with poor nutrition (especially deficiencies of vitamin A, folate and iron)

Sexually active individuals with a partner who has thrush

Smokers

Women experiencing hormonal changes