Blueberries have an anti-estrogen effect

A study done in May 2014 at the University of Louisville has shown that the phenols in blueberries make cells less sensitive to the detrimental effects of estradiol, but leave the desirable effects of the hormone intact. Just one more reason to be sure that you are eating blueberries. They have so many benefits. Anyway … back to the study:

The human equivalent of the highest dose that was used in the experiment is about 30 g blueberry powder daily. However, the powder was not concentrated, as it only contained 38 mg of phenols  per gram. If you’re thinking of using blueberries as an anti-estrogenic supplement, and you can find a good quality extract, a few capsules per day will probably be enough.

Source:
J Agric Food Chem. 2014 May 7;62(18):3963-71.

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