Flaxseed is a rich source of healthy fat, antioxidants, and fiber. The seeds contain protein, lignans, and the essential fatty acid alpha-linolenic acid, also known as ALA or omega-3. Flaxseed has long been thought to offer health benefits. It contains fiber, fat, protein, and various minerals and vitamins. These nutrients may offer protection against cancer, diabetes, and cardiovascular problems. Consuming ground flaxseeds enables the body to absorb the nutrients more effectively.