Is it true? No
Yeast infections -- and their symptoms, from intense vaginal itchiness to cottage cheese-like discharge -- are caused by an overgrowth of the fungus candida. Because studies show that yogurt can promote the growth of healthier strains of bacteria in the stomach and intestines, people have long assumed it might also keep candida in check. And that rumor keeps circulating, thanks to the internet.
Unfortunately, "no study shows conclusively that eating yogurt cures or even lessens the severity of yeast infections," says Michele G. Curtis, M.D., professor of obstetrics and gynecology at the University of Texas Medical School at Houston.
Neither will douching with yogurt, or (yikes!) dipping a tampon in the stuff, freezing it, and inserting it -- a remedy suggested on some websites. In fact, douching can cause yeast infections, Curtis says, especially if you're using yogurt; its sugars could actually help yeast grow.
If you're sure you have a yeast infection, based on a past experience, Curtis recommends using an over-the-counter medication, such as Monistat. But, she points out, "everything that itches is not yeast!" So see your gyno when in doubt: That itching might actually be bacterial vaginosis, for instance, which requires treatment with antibiotics.
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Health.com Liz Welch First Posted: 04/28/11 09:12 AM ET Updated: 06/28/11 06:12 AM ET