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Ground flaxseed
may contain compounds that protect postmenopausal women from
breast cancer Blood levels of specific estrogens linked to
increased risk for breast cancer decreased significantly with
flax supplementation.
Previous studies have suggested that
naturally occurring compounds called phytoestrogens, work
to lower levels of circulating estrogens linked to breast
cancer. Flaxseed is especially
high in one such phytoestrogen, lignan, which is
thought to inhibit estrogen production.
Researchers tracked blood levels of two
cancer-related estrogens, estrone sulfate and estradiol, in
a group of 28 postmenopausal nuns over the course of one year.
On top of their regular diet (which was similar for all the
women studied), the nuns received daily supplements of either
0, 5 or 10 grams of ground flaxseed.
Levels of the two circulating estrogens
fell significantly
among women taking the supplements, but remained stable in
the non-supplement group.
Annual
Meeting of the American Chemical Society August 29, 2001
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