Flaxseed contains high amounts of polyunsaturated fatty acids, low saturated fatty acids, high amounts of potassium with plenty of fiber, and magnesium, iron, copper, zinc and various vitamins in small quantities.
100 gr. linseed oil contains 13.4 mg. Vitamin E, whereas 100 gr.flaxseed contains about 450 kcal. The amino acid profile of the linseed seed shows similar features to soybean. Flaxseed is frequently recommended by nutritionists because of its rich N-3 fatty acid content (about four times that of Omega-6) and is the richest source of lignans, a soluble and insoluble fiber rich and a kind of herbal estrogen. Lignans provides protection against cancer by interfering with hormones in hormone-related cancers (breast, prostate, etc.); prevents tumor cells from growing. The lignans found in flaxseed are natural Serm (modulators that select estrogen); while prventing all negative effects, on the other provides profit by positive effects of estrogen usage, i.e; allowing estrogen to connect and grow in the bones; they do not allow them to penetrate sensitive areas such as chest and uterus that they may damage. Cancer risk is reduced when there is no extra cell growth.  While 100 gr. Flaxseed contains 240.6 mg. vegetable estrogen whereas it does not exceed 17 mg per 100 grams in many other foodstuffs