Dollar store food shopping isn't derailing American diets, study suggests

Dollar stores tend to sell less healthy food, but households that shop there appear to compensate by making healthier purchases elsewhere, a new study suggests. Researchers from Tufts University in Boston analyzed more than a decade of household food purchasing data from 183,000 U.S. households between 2008 and 2020. The study, published Monday in the Journal of the Academy of Nutrition and Dietetics, found that dollar stores now account for 6.5% of household calories, double the 3.4% they made up in 2008. To track the healthfulness of household food purchases and diet quality, the team looked at data from the Healthy Eating Index (HEI), which ranges from 0 to 100. The HEI measures how closely a person's diet aligns with national dietary guidelines, considering factors such as fruit and ve