When most people think about low-fat dairy products, they don’t immediately think of a correlation with insulin resistance. After all, fat-free yogurt and kefir are touted as ideal health foods, especially if people want to lose weight, right?
Well, not so right.
A recent Iranian study, which followed 1,205 participants for 2.3 years, has shown that Branched Chain Amino Acids (BCAA), which exist in very high amounts in a variety of dairy products, cause insulin resistance. The study was conducted in Iran, where the greatest amounts of BCAA are consumed via dairy items.
These BCAA are common in products such as whey powder (often used in smoothies and protein drinks), as well as the aforementioned low-fat or fat-free yogurt and kefir, skim milk, lower-fat milk, and low-fat cheese.
When these sugars and proteins are consumed during a sedentary period, rather than after an intense workout, the proteins and sugars contribute to fat storage, instead of going into muscle tissue.