Doubt cast on the benefits of omega-3 for the brain

Conclusion This study investigated the possible benefits of a diet high in omega-3 fatty acids on the brain. It has several limitations: One problem is that it only measured blood levels of omega-3 fatty acids at the start of the study. These might have changed over time if the women changed their diets or started – or stopped – taking omega-3 supplements. Also, the first cognitive tests were administered on average three years after the blood samples were taken. It’s important to note that the researchers did not measure women’s dietary intake of omega-3 fats, only blood levels, although the authors say these have been found to correlate with dietary habits. Finally, the fact that this was retrospective, secondary analysis of previous research means the results should be viewed with caution. The research on omega-3 fatty acids remains inconclusive, as is the case with many so-called superfoods. While it remains unclear whether a diet rich in omega-3 fats may help protect against dementia or related conditions, some research has found omega-3 fats may help protect against heart disease. A healthy diet should include at least two portions of fish a week, including one of oily fish. It is interesting to note that this study is a relatively rare example of a study published in a high profile journal that has produced a negative finding. This should help combat the problem of publication bias. Analysis by Bazian. Edited by NHS Choices. Follow Behind the H...
Source: NHS News Feed - Category: Consumer Health News Tags: Cancer Food/diet Neurology Source Type: news