Lignans are a type of plant compound known as polyphenols found in flaxseeds, sesame seeds, berries, and other foods.
One of the more significant benefits is in preventing and even curing breast cancer. He cites one case where a woman’s tumor shrank significantly from consuming flax seeds.
One of the principal mechanisms by which it benefits is in estrogen regulation. Since many other types of cancers, including prostrate cancer is estrogen driven, both women and men can benefit from flax seeds.
Another benefit of flax seeds is estrogen regulation. They not only reduce excess estrogen, but can increase low estrogen levels as well. This is an important benefit to aging women. Since older men suffer from excess estrogen levels due to conversion from testosterone, I believe flax seeds would provide similar benefits for older men.
Because of the highly perishable nature of flax seeds once ground, it is important to keep and store only fresh whole flax seeds, and grind them just before consuming. To get sufficient benefits, studies have shown that you need to consume 3 to 4 tablespoons daily.