This set of inquiry lessons is adaptable for middle school through high school life science or biology classrooms and will help meet the NSTA scientific inquiry position statement (2004) and the AAAS benchmarks (1993) and NRC standards (1996; 2000) related to health and food literacy. The standards require adolescents to examine their own diet and lifestyle and the availability of food, and to be able to read labels on food products to improve eating habits. The central and most important learning objective of this unit is that students begin to think hard about their food choices and learn to eat smarter and better. This unit allows teachers to create opportunities for differentiation; students bring their own ethnic and cultural food traditions to the discussion. Class discussions about the data will create opportunities to share family traditions and make the learning specifically relevant to a particular school environment and constituency. This relevancy is highly motivational and will serve as an anticipatory set. (Contains 4 figures and 4 online resources.)