GL, that's a start, it's good news.
Even a few hours a week can help, it takes away from that extra time on your hands to obsess, gives experience working with public, begining of independence.
Summer jobs for students off from school is an excellent thing, even if it isn't a lot of money.
Many of us "elders" and "youngins" have done this in our early teens while being students. I actually liked it,had money for clothes I liked, albums (now CD's),the type of things mom couldn't afford or just didn't feel was a neccesity (sp?).
GL, live your life,your young and have a future,don't waste your time obsessing about your health, but still do keep healthy and go for yearly checkups.
Take care now,
DE