Health

Foods to lower your cholesterol count

(HealthDay)—It's not always possible to lower cholesterol through diet alone—sometimes there's no way to override your DNA, and medication becomes a must.

Immunology

Eating fish may help prevent asthma

A James Cook University scientist says an innovative study has revealed new evidence that eating fish can help prevent asthma.

Cardiology

The benefits of heart health supplements come with cautions

We've all heard the advice to take a fish oil with omega-3 fatty acids to improve heart health, but are you actually getting the benefits they claim to provide? One Baylor College of Medicine cardiologist says probably not, ...

Cardiology

Heart meeting features fish oil, vitamin D, cholesterol news

Fish oil, vitamin D, novel drugs, new cholesterol guidelines: News from an American Heart Association conference over the weekend reveals a lot about what works and what does not for preventing heart attacks and other problems.

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Fish oil

Fish 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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