At this point my biggest hope is with kids, and the generation following them. I think anyone over 22 or so is a lost cause at this point. Some people will slide into an unhealthy lifestyle. Some out of it. But I doubt there's going to be any big upheavals.  It's sad to say that I'm more hopeful in the basic math skills of early grade school kids than I am adults. But...that's the state of things.