People suffering from rosacea should avoid drinking excessive alcohol and eating starchy and sugary foods. Some people find that caffeine and dairy worsen their symptoms, so these products should generally be avoided. Eating leafy greens and high-fiber foods, such as lentils, asparagus and kale, can also help reduce rosacea symptoms.
Citrus and spicy foods can trigger rosacea in some people, notes Everyday Health. Hot foods and drinks can also worsen a person's condition. Avoiding trigger foods can lead to improvement in as little as two weeks, but it is best to wait at least six weeks before concluding that diet does not affect the condition. Some people won't see improvements from diet changes until six months later.