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  • Turns Out The Mediterranean Diet Is A Load Of Crap

    15 Jun 2018 by Nereesha Patel in Diet, Food, Health, Lifestyle
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    Guess the hype around the Mediterranean diet was really just unnecessary, huh?

    Here’s the thing: back in 2013, the diet was lauded by the boffins from the New England Journal of Medicine.

    They published a study that found that people put on a Mediterranean diet had a 30% lower chance of heart attack, stroke, or death from cardiovascular disease than people on a low-fat diet.

    Sounds like the perfect diet, which got a lot of attention from mass media and other boffins.

    Except the journal has now retracted the study, a report by Quartz explains.

    They did so on Thursday, providing a new yet complicated reason for scepticism about how effective the now-popular Mediterranean diet really is.

    As Alison McCook of the Retraction Watch blog writes for NPR, this retraction is the result of the work of John Carlisle, a British anesthesiologist and self-taught statistician. Carlisle has spent recent years analyzing over 5 000 published randomized [sic] controlled trials (the gold standard of medical science research) to see how likely they were to have actually been properly randomized.

    In 2017, he reported his results: at least 2% of the studies were problematic.

    One of these was the 2013 NEJM article on the Mediterranean diet.

    That’s a bugger-up of epic proportions right there.

    The lead author of the paper, Miguel Ángel Martínez González, saw Carlisle’s analysis and decided to follow up with a thorough review of the study design:

    The study was supposed to randomly assign participants to either the Mediterranean diet with a minimum of four extra tablespoons of olive oil a day, the same diet but with at least an ounce of mixed nuts, or a low-fat diet. But Martínez González found that of the approximately 7 500 participants in the study, 14% had not actually been randomly assigned.

    Instead, many married couples were assigned to the same group. In one particularly troubling case, a field researcher decided to assign an entire village to a single group, because some residents were complaining that their neighbors were getting free olive oil. The field researcher working never reported the decision.

    I can sort of understand why, since it would have been hella awkward to explain that a couple of residents were irate about not getting in on the olive oil action from the start:

    Martínez González and his team spent a year reanalyzing [sic] the data, working with outside experts. The end result is that the study’s overall findings are still accurate in one sense: There is a correlation between the Mediterranean diet and better health outcomes.

    But in another sense, the paper was entirely wrong: the Mediterranean diet does not cause better health outcomes.

    *Insert dramatic music* Shock and horror.

    It just goes to show how flawed the Mediterranean diet is, which is a huge blow to its public perception. Not to mention the NEJM boffins must be feeling awkies AF.

    Moral of the story: even scientists can get stuff wrong.

    [source:quartz]

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