Interesting that there is not much discussion in the comments about weight loss

I agree, but significant permanent weight loss is a very difficult and complex problem. So perhaps it's a matter of what is the low-hanging fruit. Arguably it's a lot easier to get in the habit of flossing or taking vitamin D supplements than it is for a fat person to get thin and stay there.

When people go on health kicks, attempting to lose weight is very frequently the number one priority. Possibly because there is so much stigma associated with obesity. But a good argument can be made that other things, such as exercise, should be a higher priority.