Top 10 Health Benefits of Flax Seeds Flax Seeds Are Loaded With Nutrients. ... Flax Seeds Are High in Omega-3 Fats. ... Flax Seeds Are a Rich Source of Lignans, Which May Reduce Cancer Risk. ... Flax Seeds Are Rich in Dietary Fiber. ... Flax Seeds May Improve Cholesterol. ... Flax Seeds May Lower Blood Pressure. ... They Contain High-Quality Protein.