Between 2003 to 2004 and 2015 to 2016 in the United States, the mean AHA healthy diet score improved in adults. The prevalence of a poor diet improved from 56.0% to 47.8% for the primary score and 43.7% to 36.4% for the secondary score. o Changes in score were largely attributable to increased consumption of whole grains and nuts, seeds, and legumes and decreased consumption of SSBs. No significant changes were observed for consumption of total fruits and vegetables, fish and shellfish, sodium, processed meat, and saturated fat. • Similar changes in AHA healthy diet scores between 2003 to 2004 and 2015 to 2016 were seen in minority groups and those with lower income or education, although significant disparities persisted. The proportion with a poor diet decreased from 64.7% to 58.3% for NH Black individuals, from 66.0% to 57.5% for Mexican American individuals, and from 54.0% to 45.9% for NH White individuals. The proportion with a poor diet (<40% adherence) decreased from 50.7% to 38.8% in adults with income-to-poverty ratio ≥3.0, but only from 67.7% to 59.7% in adults with income-to-poverty ratio <1.3. Overweight/Obesity • In the US, the prevalence of obesity among adults increased from 1999 to 2000.