Five major fast food chains have significantly decreased trans fats in the oils they use to cook food. This suggests that major fast food chains have been responsive to health concerns from the public, at least on this issue.
Researchers looked at trans fat levels in french fries from five major fast food chains — McDonald’s, Burger King, Wendy’s, Jack in the Box and Dairy Queen.
According to Eurekalert:
“The researchers found that three of the restaurants — McDonald’s, Burger King, and Wendy’s — significantly decreased the trans and saturated fatty acid composition of French fries between 1997 and 2008 … While the remaining two restaurants didn’t show a decrease in trans fats during the time period studied, current nutritional information illustrates that the chains have decreased both trans and saturated fatty acid composition since 2008.”