Fish oil
hideFish oil is oil derived from the tissues of oily fish. It is recommended for a healthy diet because it contains the omega-3 fatty acids, eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA), precursors to eicosanoids that reduce inflammation throughout the body. Fish do not actually produce omega-3 fatty acids, but instead accumulate them from either consuming microalgae that produce these fatty acids, as is the case with fish like herring and sardines, or, as is the case with fatty predatory fish, by eating prey fish that have accumulated omega-3 fatty acids from microalgae. Such fatty predatory fish like mackerel, lake trout, flounder, albacore tuna and salmon may be high in omega-3 fatty acids, but due to their position at the top of the food chain, these species can accumulate toxic substances (see biomagnification). For this reason, the FDA recommends limiting consumption of certain (predatory) fish species (e.g. albacore tuna, shark, and swordfish) due to high levels of toxic contaminants such as mercury, dioxin, PCBs and chlordane. More than 50 percent of the world fish oil production is fed to farmed salmon. There are vegetarian products, DHA Omega-3, made from algae available if toxic contaminants are of concern.
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News tagged with fish oil
Fish fatty acids don’t make you cleverer or happier
Dec 22, 2009 |
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(PhysOrg.com) -- A diet rich in fish fatty acids has no effect on cognitive functions such as memory and concentration in the elderly. Nor does it affect their level of wellbeing. This is the conclusion drawn by Dutch researcher ...
Nanoparticle protects oil in foods from oxidation, spoilage
Nanotechnology / Nanomaterials
Dec 08, 2009 |
3 / 5 (3) |
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(PhysOrg.com) -- Using a nanoparticle from corn, a Purdue University scientist has found a way to lengthen the shelf life of many food products and sustain their health benefits.
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Student sleuths using DNA reveal zoo of 95 species in NYC homes -- and new evidence of food fraud
23 hours ago |
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Two New York City high school students exploring their homes using the latest high-tech DNA analysis techniques were astonished to discover a veritable zoo of 95 animal species surrounding them, in everything ...
Fuel spill at same Alaska reef as Exxon Valdez
Dec 25, 2009 |
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A tugboat struck the same reef as the Exxon Valdez tanker 20 years ago, spilling diesel into Alaska's Prince William Sound and creating a three-mile-long slick, the US Coast Guard said on Friday.
UN climate official warns of Indian energy 'crisis'
Dec 23, 2009 |
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India's reliance on coal means the country is heading for an energy crisis unless it diversifies its sources of power, the chairman of the UN's top climate change panel predicted on Wednesday.
Whiskers hold secrets of invasive minks
Dec 23, 2009 |
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Details of the lifestyle of mink, which escaped from fur farms and now live wild in the UK, have been revealed through analysis of their whiskers. Research led by the University of Exeter reveals more about the diet of this ...
Turtles' Christmas journey tracked by scientists
Dec 23, 2009 |
5 / 5 (1) |
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The journeys of two marine turtles around the world's oceans will be available to view online this Christmas, thanks to a new research project launched by the University of Exeter.
Hatchery-raised salmon too crowded
Dec 23, 2009 |
5 / 5 (1) |
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Every year, large amounts of hatchery-raised young salmonids are released into Swedish rivers and streams to compensate for losses in natural production. Butthese fish generally survive poorly in the wild. ...
Seeing how evolutionary mechanisms yield biological diversity
Dec 22, 2009 |
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An international team of scientists has discovered how changes in both gene expression and gene sequence led to the diversity of visual systems in African cichlid fish.
Feds mull regulating drugs in water
Dec 22, 2009 |
3 / 5 (2) |
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(AP) -- Federal regulators under President Barack Obama have sharply shifted course on long-standing policy toward pharmaceutical residues in the nation's drinking water, taking a critical first step toward regulating some ...
New study finds catch shares improve consistency, not health, of fisheries
Dec 22, 2009 |
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Catch share programs result in more consistent and predictable fisheries but do not necessarily improve ecological conditions, according to a new study published online this week by the journal Proceedings of the National ...
Modern behavior of early humans found half-million years earlier than previously thought
Other Sciences / Archaeology & Fossils
Dec 22, 2009 |
4.6 / 5 (16) |
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Evidence of sophisticated, human behavior has been discovered by Hebrew University of Jerusalem researchers as early as 750,000 years ago - some half a million years earlier than has previously been estimated ...
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