Healthy Eating vs. Thrifty Eating

There's tension between how healthy you can eat and how much you can spend on food, as many low-cost foods tend to be junk foods. Can you eat healthy while on a strict budget? This NYT article examines that question:

http://www.nytimes.com/2008/11/04/health/nutrition/04well.html?_r=1&ref=science

The blog of the two Social Justice teachers who lived on a dollar a day can be found here (links to the Food Cost Index, something neat to look at):
http://onedollardietproject.wordpress.com/