It was bizarre that the article did not mention trends in other behaviours that effect weight, like sleep and stress level. Millenials are arguably more stresse

It was bizarre that the article did not mention trends in other behaviours that effect weight, like sleep and stress level. Millenials are arguably more stressed out than people the same age a generation ago, due to increased student loan debt, unstable job market and poor job security. This constant stress of course contributes to how well your body can maintain a healthy weight. There should be a rigorous study comparing relative stress levels over generations, but it is not hard to imagine that this is broadly true.