The program uses the free food composition database from the USDA. This free nutritional analysis software was written for Unix systems (I use Slackware Linux), but can be compiled on just about any system with a C compiler. (To get a free C compiler, Windows people might look at Cygwin or MinGW, and Mac people might look at xcode.) By experimenting with NUT, you can find the optimal level of the various nutrients and how to implement this with foods available to you. NUT can help reconstruct the lost instruction manual to your care and feeding because, when the authorities and crackpots disagree on the proper human diet, you can design an experiment using the food composition tables to discover the truth!

Features:
-7906 foods and 146 nutrients--the complete, latest USDA database
-Foods easy to find and add to daily meals
-Configurable for 1-19 meals per day and any dietary plan--including low carb, zone, low fat
-Comprehensive meal analysis for any number of consecutive meals
-Presents both easy-to-read percentage summaries and in-depth nutrient analysis, including Omega-3 and Omega-6 essential fatty acids
-Defaults to ounces or grams based on user input
-Suggests foods based on current diet
-Includes novel meal planning feature: you choose the food, NUT adjusts the quantities to your plan
-Can easily create additional databases for other family members
-Auto-transfer of successful dietary strategies from analysis screen to configuration settings
-Allows recording of recipes and customary meals for fast data entry
-Guesses recipes of packaged foods
-Creates graphs of nutrient intake showing daily and monthly trends
-Sorts foods richest in each of the 146 nutrients
-Reveals which foods contribute most to user's nutrition
-Runs on Linux and just about everything else that can compile a C program, and NUT has no dependencies on other programs. It runs fast and it's not huge.
-The price is right--it's free! And you can read and modify the source code.