Is there a branch of sociology that deals with nutrition and active lifestyles?

(Please excuse my ignorance if this is an obvious question, but my Googling skills don't seem to be up to par today.)

I was just wondering if there is a branch of sociology that deals with health and wellness - like nutrition and exercise - when looking at a community or nation as a whole. If there is, would this be something that one could study in graduate school? (I'm interested in how lifestyles affect societies, not really the biology and chemistry part of health. I mean, I realize that I'd probably have to learn about those things, but they're not what I want my main focus to be.)