USDA produces four food plans outlining practical, nutritious diets at successively higher cost levels: the Thrifty, Low-Cost, Moderate-Cost, and Liberal Food Plans. The Thrifty Food Plan serves as the basis for maximum allotments in SNAP.

The diets of most Americans fall short of the Dietary Guidelines for Americans. This exploratory analysis examines dietary patterns of low-income individuals classified as healthy and less healthy eaters based on their score on the Healthy Eating Index (HEI)-2005. The HEI-2005 is a 100-point score that measures how well populations adhere to the Dietary Guidelines for Americans.