Stephan's posts on food reward and obesity and my own efforts to write a paper over this weekend have caused me to muse on one thing I've had an issue: low appetite. In high school my mother would often come home from work on Saturdays at 4 and berate me for not having eaten. Chances are I was reading or playing video games instead.  Late in high school my weight and appetite started to increase dramatically reaching its apex in college. I never figured out why.