Blubber Buster
This site has an irreverent title, but don't let it throw you off. It's a great site for young people to learn more about weight gain and related issues.

Calorie Council
"Calories still count!" at the Calorie Control Council. Offers useful calculating tools for fat grams and calories as well as feature articles like the well-done "Winning by Losing."

Cyberdiet.com
Cybderdiet features nutritional information and interactive tools, including a food database and automated meal planner. Update: this site now charges a fee for its services.

Delicious Decisions
This attractive, well-organized site is by the American Heart Association and includes healthy recipes, a guide to reading nutrition labels and the healthy-heart food pyramid.

Diet Information
This site is not the easiest to navigate, but it is worth a visit. Provides good general weight loss tips and a selection of informative feature articles.

Diet Talk.com
This support-oriented site includes member journals, message boards, chats and members' pages.

iVillage's Diet & Fitness
iVillage's diet and fitness site offers a plethora of sub-categories on topics ranging from motivation to herbs to safety and health.

Nutrio
While this site is now focused on providing meal plans and support for a fee, you do not have to be a member in order to browse their interesting feature articles.