Flaxseed oil is derived from the ripe seeds of the flax plant (Linum usitatissimum). The clear, yellowish liquid contains certain essential fatty acids linked with reduced heart-disease risk and other health benefits.
Just last week, flaxseed oil was also linked with steroids. The Washington Post reported that Olympic gold-medalist Marion Jones had acknowledged, in a letter to close family and friends, using steroids as she prepared for the 2000 Olympics in Sydney. In the letter, according to the Washington Post article, Jones wrote that she thought the steroid substance was flaxseed oil.
While the verity of these claims has not been established, the healthful benefits of flaxseed oil are substantial. Flaxseed oil (also known as linseed oil) is chockfull of the essential fatty acid alpha-linolenic acid, or ALA, which is an omega-3 fatty acid.
Omega-3 and omega-6 fats are considered essential fatty acids necessary for body processes, yet not manufactured by your body. For instance, essential fatty acids are necessary for the formation of healthy cell membranes, production of hormones that regulate blood pressure and inflammation, as well as the functioning of the nervous system.
Omega-3 fatty acids in particular have been shown to help lower cholesterol, improve heart health and reduce inflammation associated with joint pain, stiffness and swelling.
But since you can't make them, you have to eat substances that contain these omegas. Flaxseed oil and some fishes like trout and tuna are loaded with omega-3's.
Live Science newsletter
Stay up to date on the latest science news by signing up for our Essentials newsletter.
Jeanna served as editor-in-chief of Live Science. Previously, she was an assistant editor at Scholastic's Science World magazine. Jeanna has an English degree from Salisbury University, a master's degree in biogeochemistry and environmental sciences from the University of Maryland, and a graduate science journalism degree from New York University. She has worked as a biologist in Florida, where she monitored wetlands and did field surveys for endangered species. She also received an ocean sciences journalism fellowship from Woods Hole Oceanographic Institution.