Relation of food cost to healthfulness of diet among US women

Background Few studies have evaluated the cost of a diet that may prevent cardiovascular disease High scores on the Alternative Healthy Eating Index (AHEI) have been associated with lower rates of cardiovascular disease Objective We sought to evaluate the cost of a dietary pattern that may prevent cardiovascular disease among women residing in the United States Design By using food cost data from the US Department of Agriculture we explored relations between spending on food and AHEI scores among 78 191 participants in the Nurses Health Study By using linear regression we estimated the change in AHEI score (range 2 5-87 5) for a $1 increase in spending on various food groups Results Study participants in the highest energy adjusted spending quintile spent 124% as much money each day as those in the lowest quintile The difference in AHEI scores (10th-90th percentile) between all study participants was 30 index points (Spearman s cor relation coefficient between total wending and AHEI = 0 44) The difference in AHEI scores (10th-90th percentile) within each quin the of spending ranged from 25 to 29 index points Greater spending on nuts soy and beans and whole grins was associated with a higher AHEI score Greater spending on red and processed meats and high fat dairy was associated with a towel AHEI score Conclusions Although spending more money was associated with a healthier diet large improvements in diet may be achieved with out increased spending The purchase of plant based foods may offer the best investment for dietary health Am J Clin Nutr 2010 92 1197-203