Secoisolariciresinol, a phytochemical in the class of Lignans (phytoestrogens), found abundantly in flax seeds, sunflower seeds, sesame seeds, pumpkin, strawberries, blueberries, cranberries, etc. Health Benefits 1. Health Benefits In the review of a growing body of evidence suggests that SDG metabolites may provide health benefits due to their weak oestrogenic or anti-oestrogenic effects, antioxidant activity, …