Tag Archives | Dnalysis

Can DNA Predict Your Perfect Diet?

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Posted 30 July 2018

Nutritional genomics would mean the end of dietary guesswork, but science hasn’t quite caught up to the hype

Markham Heid The Medium

Which diet is best for weight loss: low carb or low fat?

It seems like a straightforward question — one that a single well-designed study should be able to answer. But after nearly 20 years of such studies, the debate rages on. Taken together and applied to big groups, existing research suggests the two diets are about equally effective. But at an individual level, the effectiveness of these plans varies dramatically; some people lose 50 pounds or more, while others on the same diet end up gaining weight.

If only dietitians and doctors could predict how a patient would respond to a specific diet — in terms of weight loss, but also longevity, disease risk, and other health outcomes — it would Read the rest

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DNA Diet does not work!

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Posted 22 February 2018

On February the 8th we published the position of the Academy of Nutrition and Dietetics in which they stated “the use of nutrigenetic testing to provide dietary advice is not ready for routine dietetics practice”.

We commented: As far back as 2011, we pointed out that the evidence in support to the DNA diet, marketed, promoted and sold by Dr. Daniel Meyersfeld, Yael Joffe, (DNAnalysis) was inadequate, i.e., there is no proof that their diet would benefit or work.

A study has just been published in which a low-fat diet was compared with a low-carb diet. The researchers assessed whether DNA diets were able to predict a beneficial diet.

People in both groups did lose weight over the course of a year: an average of 11.7 pounds for the low-fat group, and 13.2 for the low-carb set. But the difference between how Read the rest

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The trouble with genetic testing

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Posted 19 July 2017

We have been highly critical of DNA testing as a means for creating weight-loss diets, arguing that some of the genes occur at very low prevalence in certain population groups, or not at all, or may be influenced by other triggers or environmental factors. In spite of the lack of evidence for the accuracy or benefit for these DNA based diets, the companies continue to market these products duping consumers.

In this newspaper article, titled, ‘We are all mutants now’: the trouble with genetic testing With so many unknowns in our DNA, using genetics in medical testing doesn’t always bring the answers – sometimes it brings only doubt, written by Carrie Arnold and published in The Guardian, she addresses the accuracy of DNA testing for other conditions.

She writes: To get a better handle on all the variation in humans, scientists are going to need Read the rest

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DNA DIET – ASA breach ruling

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Posted 10 March 2015

Meyersfield-JoffeWhat does one say about two health professionals who continue to market a test that claims to be effective for assisting consumers with weight-loss, without any independently, peer reviewed, published evidence that the test is able to indeed fulfill this claim? We would expect that ethical health professionals would desist from doing so, in particular after an ASA ruling. But this is not in the case of Dr. Daniel Meyersfeld and dietician, Yael Joffe. A breach complaint was laid with the ASA.
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DNA Diet, bad news 4 years on

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Posted 03 February 2015

Dna-MeyersfeldDna-YoffeIn 2010, CamCheck highlighted the claims for a diet based on genetic testing offered by Dnalysis, “the second company in the world to offer a DNA diet”, according to its CEO, Dr Daniel Meyersfeld, and Yael Joffe. We called it a scam for the science did not support the claims. The ASA ruled against the claims for the company, and subsequently, a breach ruling of the previous ASA ruling. Well that has not stopped these two from marketing the claims, as these are still evident on their website.

The reason for this post? In an article published in the highly reputable journal, Obesity, titled Genetic association studies of obesity in Africa: a systematic review, the authors conclude that “[A]ccording to this data, over 300 polymorphisms in 42 genes have been studied in various population groups within Africa . . “, “[O]f the 36 Read the rest

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