The gnutrition package by Edgar Denny supports various nutrition-related functions. Edgar's interests have moved on, so we are looking for a new maintainer to update, enhance, and generally push the package forward.

Free Software Directory entry.
Gnutrition project at sourceforge.

If you're interested, please take a look at this general information about GNU packages and being a GNU maintainer, and then email maintainers@gnu.org with a bit about your background and interest. Thanks!