Flaxseed ? also know as linseed- comes from the flax plant (Linum usitatissimum). The seed contain lignans which are fiber-type ingredients. The seeds also contain omega-3 and omega-6 fatty acids.

Flaxseed may be ground into flour or meal. It is also available as capsules (1000 mg) and also as the oil which is generally taken as one to three tablespoons daily.

Flaxseed contains alpha-linolenic acid (ALA). ALA is a type of omega-3 fatty acid that is converted to eicosopentanoic acid (EPA) and docosahexaenoic acid (DHA) which are the active ingredients in fish oil. Because of the high lignan content, flaxseed is a good source of fiber.

While there are few conclusive studies confirming the beneficial effects of flaxseed in rheumatoid arthritis, it is known that omega-3 fatty acids have anti-inflammatory properties. Several uncontrolled studies suggest that flaxseed is helpful in reducing the symptoms of joint stiffness and pain.

Flaxseed has anti-coagulant (blood thinning) properties so that patients taking blood thinners (Coumadin, heparin, Plavix, Lovenox) or non-steroidal-anti-inflammatory medicines.

Flaxseed should also be avoided if a patient has a history of uterine or breast cancer or prostate cancer.

Flaxseed may have cholesterol-lowering properties. Since this effect has not been well characterized, patients are advised to use caution if there is a history of hypercholesterolemia or there is concurrent use of cholesterol-lowering medicines.

There are also claims flaxseed may lower the risk for cardiovascular disease.

The fiber in flaxseed also can block absorption of some medications.