Food Matters. It's as simple as that. We can't ignore what we eat. I'm a little obsessed right now with learning everything I can about farming, agriculture, and nutrients. There's so much information out there. I'm soaking it up like a sponge. 
Check out some of these movies if you are interested in the subject:
Food Inc. 
Food Matters
King Corn
Bad Seed
Also read books by Michael Pollan and Marion Nestle. 
I'm also into how our hormones effect our physical state and how what you eat and do effects your hormones. Interested? Read into Jillian Michaels "Master your Metabolism. 
Its time for all of us to stop eating whatever and start caring about what goes into our bodies. We are what we eat. 
Check out this link for more info: http://www.foodmatters.tv/