I’m sure everyone saw this news release a few days ago titled Mediterranean diet cuts mortality rates, says study. Here comes the media darling again!

Eating plenty of fruit, vegetables and fish instead of meat, not to mention olive oil rather than saturated fats, is generally accepted to be good for you, but only a few studies have attempted to work out whether such a diet would help people to live longer. The study, published today in Archives of Internal Medicine, confirms that among nearly 400,000 retired Americans, the closer they stuck to a Mediterranean diet, the lower their likelihood of death over a five-year period.

Unfortunately, it doesn’t sound like what was really measured, as is typical of comparisons to the Standard American Diet (SAD), was solely a reduction in saturated fat in favor of olive oil. That’s the story as the media reports it, but when you stand back and really examine it, the differences between the Mediterranean Diet (MD) and what the typical American eats are huge. The MD features loads of fruits and vegetables. The SAD doesn’t. The MD features whole foods, including grains and legumes, and little in the way of processed junk full of trans fats and sugar. The SAD features lots of processed junk full of trans fats and sugar and little in the way of whole foods. Notice any differences? I may not be a big fan of grains and legumes, but it doesn’t take Einstein to figure out that consuming a diet of food, rather than junk, will improve health.

So let’s jump into this a bit deeper. The NHS took a look at this study also. As they point out, we’re dealing with a food questionnaire study, which are notoriously inaccurate. It was also not truly a comparison of the MD and a SAD or any other diet. It was a measure of how closely they adhered to the MD, which is to say that those that weren’t adhering closely may have been including steak, Twinkies, Pop-Tarts, or eggs. We don’t know what they are really comparing it to. But that works out well for putting out a story. Maybe the headline should really be “The Mediterranean Diet: It’s Better Than…Well, Nobody Really Knows Because We Didn’t Control It.”

All of this makes me wonder what an evolutionarily-correct Paleolithic diet does for mortality. Recall that a Paleo-style diet beat a Mediterranean diet when given to people with diabetes. But a Paleo diet includes “all of that meat and fat” and will probably not be featured in the mainstream media for quite some time.


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