Molds On Food: Are They Dangerous?
http://www.fsis.usda.gov/FactSheets/Molds_On_Food/#16

When you can eat things with mold on them.

How Should You Handle Food with Mold on It? Buying small amounts and using food quickly can help prevent mold growth. But when you see moldy food: * Don’t sniff the moldy item. This can cause respiratory trouble. * If food is covered with mold, discard it. Put it into a small paper bag or wrap it in plastic and dispose in a covered trash can that children and animals can’t get into. * Clean the refrigerator or pantry at the spot where the food was stored. * Check nearby items the moldy food might have touched. Mold spreads quickly in fruits and vegetables. * See the attached chart “Moldy Food: When to Use, When to Discard.”

The USDA takes it's stand.

The Center for Nutrition Policy and Promotion (CNPP), part of the USDA, combines scientific research and the nutritional needs of the American public. Special interest: Dietary Guidelines for Americans | The Food Guide Pyramid | Interactive Healthy Eating Index | Nutrition Insights.

Resources aimed at developing and promoting dietary guidance with links to MyPyramid, dietary guides, nutrition insights and other resources; many aimed at consumers.

The USDA Center for Nutrition Policy and Promotion (CNPP) works to improve the health and well-being of Americans by developing and promoting dietary guidance that links scientific research to the nutrition needs of consumers. CNPP is an agency of USDA's Food, Nutrition, and Consumer Services.

has data on food costs, customizable food pyramids, ect