Article: Omega 3 fatty acids are key to a healthy brain: essential fatty acids found in cold-water fish may help lower the risk of stroke and alzheimer's disease, prevent blood clots, combat depression and more.

Keeping your mind sharp and your moods in balance may depend in part on how often you eat fish--because oily cold-water fish are a primary source of omega-3, an essential fatty acid that plays a critical role in cognitive and behavioral function.

Omega-3 fatty acids are a form of polyunsaturated fats, one of the four basic types of fat that you get from food intake (the other fats are saturated fats, cholesterol and monounsaturated fats). Both omega-3s and another form of polyunsaturated fats, omega-6s, are necessary for good health but cannot be manufactured by the body. Nowadays most people consume too much omega-6--found in processed foods and vegetable ...

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