Monday, May 30, 2011

Magic in Diet Studies

Sometimes there is magic in those popular diet studies. It is amazing how the so called scientits or researchers work out their results to get conclusions that would sell their work.

This is a great title and you would immediately think that olive oil will help you reduce body weight. Right? After all, it says it right there in the title!

Now let’s look at the results. Here is Table 1 from the study:
 Taken from: Eur J Clin Nutr. 2009 Dec;63(12):1387-93. Epub 2009 Aug 26.

Ok, so after 3 years of follow-up, the olive oil group changed their body weight in +0.1 Kg and waist circunference changed -0.6 cm (let´s not consider the huge variations in both body weight and waist circunference among participants).

Actually, the results are saying that the control group gained weight (+0.36Kg) and the olive oil group also gained weight (+0.1 Kg). Since the weight gain of the olive oil group was lower, then olive oil is good for avoiding weight gain.

Is that really a measure of weight management? Actually, the olive oil group increased their body weight by 100 grams. Even when compared to the control group that weight gain avoidance of 0.2 Kg (actually, 226 grams) is insignificant in a 3-year period. This supposely weight loss is even more insignificant if we consider that participants from the olive oil group were obese at baseline (BMI of 29.96 average).

So when some “new study” seem to be too good to be true, be aware and check out the results for yourself, then decide

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