True or False: Eating Yogurt Can Help Reduce Your Risk of Vaginal Yeast Infections

mythbuster graphic More than half of all adult women will have at least one vaginal yeast infection –and, surprisingly, about 20% of men experience a similar infection. Although these infections can be effectively treated with medications, for an unfortunate few they have a tendency to recur despite adequate treatment. Can eating yogurt help them avoid repeated infections?

Evidence for the Health Claim

A fungus known as Candida is responsible for causing yeast infections. A small amount of it is always present on the skin and mucous membrane surfaces in the body. However, when Candida multiplies, and the acid levels in the vagina become imbalanced, the unpleasant symptoms of a yeast infection, or candidiasis , result. Most female yeast infection sufferers report itching and burning that may be more pronounced when urinating. Men who have candidiasis typically complain of itching and red, bumpy skin on and around the penis. Fermented milk products contain so-called “probiotic,” or “good” bacteria, including lactobacillus, acidophilus , and bifidobacterium , that compete with Candida in the genital area. In a study conducted with 320 Finnish women, researchers found that those who ate three or more servings per week of yogurt–or in some cases, cheeses made from fermented milk–had far fewer fewer UTIs than those who did not eat yogurt or ate it only infrequently. Several studies have found that to make a significant reduction in the occurrence of yeast infections, people need to consume at least one serving of yogurt per day. In these studies, the yogurt contained acidophilus bacteria, which is generally noted on food labels as containing “live” or “active” cultures.

Evidence Against the Health Claim

Not all studies support the claim that regular yogurt consumption reduces the risk of recurrent yeast infections, and those that do have generally been small in size. Furthermore, there is little evidence to suggest that eating lots of yogurt once symptoms appear will resolve an acute infection any quicker.

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