There are three reasons to consider adding a little bit of flax seed, like a teaspoon three times a week, to oatmeal, bread, etc. The first reason is it's the richest plant source of the phytoestrogen, lignin. The second reason is it contains soluble fiber, which is always good. The third reason is it is a plant source of omega-3 fatty acids. Now, let's talk about lignins.
Lignins act as antioxidants.
They protect healthy cells from chance meetings with free radicals. The University of Toronto has done a lot of research on flax seed. Human studies are now going on. That's the whole point of the book. Maybe some women are compelled to buy this book because they are so fearful of getting breast cancer.