I ran into a good show on the "Cooking Channel" yesterday, called "Food Hospital":

The Food Hospital : Cooking Channel

They covered a guy who was overweight and had a million problems as a result, a woman with chronic fatigue syndrome (turned out, in her case, she was not eating properly) and other interesting stuff (including one woman who had really bad breath :-)

I'd pick a good "generic" overall healthy diet, like the DASH diet they use:

DASH Diet Eating Plan (It's actually a "free" diet/book from the Government, don't buy anything! http://www.nhlbi.nih.gov/health/publ...h/new_dash.pdf) or go to the library and research food/diet/nutrition, etc. and kind of start a "hobby" around nutrition and eating right (instead of trying pills, extreme diets, etc.) and think about what a healthy lifestyle would look like for you, etc. That way you can lose weight and become healthy and keep it up.

A public site I like where one does things all one's self and is geared for teens is Teen Health and Teen Diet Program From SparkTeens.com it is even possible to meet people there from one's own area and make new friends, etc.