Dispelling nutrition myths, ranting, and occasionally, raving


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Follow Friday: Grapefruit for diabetes

Photo by Emma on Flickr used under a Creative Commons Licence.

Photo by Emma on Flickr used under a Creative Commons Licence.

I had been planning on writing a post about the latest headlines heralding grapefruit juice as the greatest thing since Metformin. According to the news articles you’d think that grapefruit juice will prevent obesity and diabetes. Read, and interpret, the actual research and you get a slightly different story. Fortunately, the NHS has saved me the trouble and written a great critical review.


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Fat does not equal fat

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The article: Anyone Silly Enough to Think Fat is Good for You Needs to See This Brain Study made me want to scream and scarf a bag of potato chips out of spite.

The article reports that the study found that body fat doesn’t just sit around your midsection, it also affects your cognitive function. This lead them to the conclusion that recent reports that dietary fat has been wrongly demonized are incorrect.

What’s my problem with this? One, body fat and dietary fat are not the same! You can become obese by consuming too many fat-free foods. Dietary fat does not equal body fat. The study was looking at  body fat not dietary fat. This means that we can’t go blaming butter. Two, the study was done on mice. Mice are not humansYes, it’s quite likely that excess body fat has negative effects on many aspects of your system. However, we can’t make the leap from a study on mice to humans. And we most certainly can’t make the leap to dietary sources of fat.