The First Nations Development Institute has just completed a new series of 12 Fact Sheets concerning Native American health and food issues. You can read them or download them (as PDFs) from their website. The are free, but you may have to create a free account in their Knowledge Center (their online resource center) in order to access them. If you already have a free account in their Knowledge Center, you can get right to them after you sign in: http://bit.ly/KhM3t7.
These Fact Sheets were created as part of the Native Agriculture and Food Systems Initiative (NAFSI), and were generously underwritten by the W.K. Kellogg Foundation.