Sunday, February 9, 2014

Look a little closer

This study is all over the health news-

Eating low-fat yogurt may help prevent Type 2 diabetes: study
The evidence comes from a long-term health survey of men and women living in the eastern county of Norfolk, whose eating and drinking habits were detailed at the start of the investigation.
During the study's 11-year span, 753 people in the group developed adult-onset, also called Type 2, diabetes.
Those who ate low-fat fermented dairy products — a category that includes yogurts, fromage frais and low-fat cottage cheese — were 24 percent less likely to develop the disease compared to counterparts who ate none of these products.
I have a few comments...

1.  It's a correlational study.   People who ate yogurt had less diabetes.  A causality study would give people yogurt and see if their diabetes got better.   These results could also easily be explained by people who are prone to T2D do not eat yogurt for some reason.  Like maybe they are prone to strep infections or autoimmune reactions which probably do cause T2D.   Yogurt is made with streptococcal bacteria variants....  I know I can't tolerate it- gives me mouth ulcers. But I can eat lactobacillus fermeted products like sour cream and cheddar cheese with no problem.

2.  Consumption of high fat dairy products had no impact on the risk of T2D.   This is added as a note to support their low fat agenda.   However, since their is no increased risk, it shows no such thing.  And for the record, my husband likes yogurt, and their are NO high fat varieties.   And only one that is flavored and low carb.

3. "Volunteers' eating habits were recorded in exacting detail at the start of the study but this information was not updated during the ensuing 11 years. So it was unknown if or how they changed their diet over this time."    This is not a scientific study at all.