Omega-3s extend life in women

In the largest study of omega-3s and longevity, doctors measured EPA and DHA levels in 6,501 women, aged 65 to 80 at the start of the study, and followed up for 15 years.

The doctors used what they call the “omega-3 index,” which measures the total concentration of EPA and DHA in red blood cells. After accounting for differences in lifestyle, including physical activity, smoking, and history of heart and circulatory disease, women with the highest levels of omega-3 were 20 percent less likely to have died from any cause compared to women with the lowest omega-3 levels. Doctors estimated that it takes a combined total of 1,000 mg of EPA and DHA per day to raise omega-3 levels from the lowest in the study—3.6 percent—to the highest, 7.1 percent. 

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