Dietary<unk>  is obtained by consuming fatty<unk>  or supplements in pill<unk> rm.<unk>  is oil derived from the tissues of oily<unk> .<unk> s contain the omega-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), precursors of certain eicosanoids that are known to reduce inflammation in the body and improve hypertriglyceridemia. There has been a great deal of controversy in recent years about the role of<unk>  in cardiovascular disease, with recent meta-analyses reaching different conclusions about its potential impact. The most promising evidence supports supplementation<unk> r prevention of cardiac death.<unk>  and omega-3 fatty acids have also been studied in a wide variety of other conditions such as clinical depression, anxiety, cancer, and macular degeneration, yet their benefit in these conditions has also not been verified. The<unk>  used as sources do not actually produce omega-3 fatty acids. Instead, the<unk>  accumulate the acids by consuming either microalgae or prey<unk>  that have accumulated omega-3 fatty acids. Fatty predatory<unk>  like sharks, swordfish, tilefish, and albacore tuna may be high in omega-3 fatty acids, but due to their position at the top of the<unk> od chain, these species may also accumulate toxic substances through biomagnification.<unk> r this reason, the United States Environmental Protection Agency recommends limiting consumption (especially<unk> r women of childbearing age) of certain (predatory)<unk>  species (e.g., albacore tuna, shark, king mackerel, tilefish and swordfish) due to high levels of the toxic contaminant mercury. Dioxins, like PCBs and chlordane, as well as other chlorinated cyclodiene insecticides are also present.<unk>  is used in aquaculture feed, in particular<unk> r feeding farmed salmon. Marine and freshwater<unk>  vary in contents of arachidonic acid, EPA and DHA. The various species range from lean to fatty, and their oil content in the tissues has been shown to vary from 0.7% to 15.5%. They also differ in their effects on organ lipids. Studies have revealed that there is no relation between either 1) total<unk>  intake or 2) estimated omega−3 fatty acid intake from all<unk>  and serum omega−3 fatty acid concentrations. Only fatty<unk>  intake, particularly salmonid, and estimated EPA + DHA intake from fatty<unk>  has been observed to be significantly associated with increase in serum EPA + DHA. As of 2019, the US<unk> od and Drug Administration (FDA) has approved<unk> ur<unk> -based prescription drugs, namely Lovaza, Omtryg (both omega-3 acid ethyl esters), Vascepa (ethyl eicosapentaenoic acid), and Epanova (omega-3 carboxylic acids). Notably, none of these drugs is actually<unk> : they are all derivatives of acids<unk> und in<unk> .
Fish oil
Gutter oil
Yu Yee oil
Baby oil
Soybean oil
Emu oil
Omega-3 fatty acid
Fruit salt