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My mom was diagnosed with breast cancer last year and after the initial treatment and after the more tests were done, it turned out her cancer was sensitive to estrogen and her oncologist started her on Tamoxifen, as well. We got just a general guide on what foods to avoid since they also contain estrogen and of course, soy was at the top of the list. Other than that we’re trying to buy organic meat and dairy for her mainly because I’ve read that besides antibiotics large meat plants tend to sometimes give hormones to the animals, too. Also, there are mixed views on flaxseed oil since it’s healthy source of omega 3 fatty acids, but it does also contains substance that converts to estrogen. But besides these sources, are there any other major estrogen sources from food that she also shouldn’t take? And any info on flaxseed would be much appreciated!


Hello Megg,

You're right to be concerned about what foods your mother can eat.  Go on the Internet and key in dietary fiber foods. com/phytoestrogen -hormones and there is a chart (2 pages of charts) that tell you what foods contain phytoestrogens and how much.  You will see that flaxseed oil contains phytoestrogens so you want to stay away from that.  Instead of flaxseed, your mom can take krill oil or fish oil.  These do not contain phytoestrogens as the omega-3s in these oils come from crustacean and fish sources so they would be safe for your mom to take.  It is a good idea to eat organic meats because they are free of growth hormone.  I wish the best of luck to you and your mom.