Who Shouldn't Take Flaxseed?

Flaxseed, a high-fiber, high-lignan seed commonly used as a nutritional supplement, demonstrates promise as a holistic treatment option for dozens of common conditions. Flaxssed may help to prevent or treat diabetes, high cholesterol and menopausal dysfunctions. When used as a food ingredient or taken in moderate doses, flaxseed is generally safe and associated with few risks.

However, there are some flaxseed contraindications-- circumstances in which a person should not use flaxseed or products containing it. If you are in any of these high-risk categories, do not take flaxseed supplements unless your health care provider specifically advises it.

Pregnant Women

If you are pregnant, you should not take flaxseed oil. Pregnancy is regarded as a flaxseed contraindication because flaxseed can affect levels of some hormones. Flaxseed may alter levels of the hormone estrogen, which is involved in pregnancy and lactation. In large doses, it could lead to miscarriage, preterm birth or hormonal birth defects in the unborn baby. Although these risks are unproven, they outweigh the potential benefits of flaxseed in pregnancy.

Bleeding Disorders

Flaxseed supplements are not safe for people with bleeding disorders such as hemophilia and von Willebrand disease. Compounds in flaxseed can impair blood clotting, thereby increasing the risk of bleeding and bruising in people with these conditions. Even if your condition is well managed, it is not a good idea to take flaxseed supplements if you have a bleeding disorder.

Gastrointestinal Obstruction

If you have a bowel obstruction, a narrow esophagus or inflammation in your intestines, you should not take flaxseed supplements. Flaxseed is extremely high in fiber and might make the obstruction worse. Your health care provider can offer other tips for preventing the problems associated with gastrointestinal (GI) obstruction.

High Triglycerides

Flaxseed supplements can help to decrease cholesterol, but partially defatted flaxseed products-- which have had much of the plant's omega-3 alpha linoleic acid removed-- can increase triglyeride levels. Do not use flaxseed if you have high triglyerides; it could make the condition worse and increase your risk of some forms of heart disease.