Linseed is the small, reddish-brown seed of the common flax plant, linum usitatissimum, the same plant that's used to grow the fibre from which linen has been made for thousands of years. Some flax plants produce more seeds than others, and these have carefully been chosen as a crop plant.
What is linseed good for?
People use it as a dietary supplement to prevent constipation, diabetes, high cholesterol, heart disease, cancer, and several other conditions. The nutrients in flaxseed include lignans, antioxidants, fiber, protein, and polyunsaturated fatty acids such as alpha-linolenic acid (ALA), or omega-3.