Leafy goodness: Spinach is rich in B vitamins.

Thiamine and riboflavin are two of the many kinds of B vitamins. The study does not mean that thiamine and riboflavin themselves stave off PMS; it’s possible, for example, that women who eat more of the vitamins also have other habits or characteristics that have an effect. Still, women who might be concerned with getting PMS “might want to evaluate their diet and make sure they’re having a reasonable (amount) a day of thiamine- and riboflavin-rich foods," says Elizabeth Bertone-Johnson, associate professor of public health at the University of Massachusetts, Amherst, US.

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