Share of U.S. adults who were underweight from 1988 to 2018, by age
In the 30 years from 1988 to 2018, the rate of underweight has generally decreased with the largest decline seen among U.S. adults 60 years and above. In 2017-2018, underweight was most prevalent among adults 20-39 years old.
This statistic presents the prevalence of underweight (BMI less than 18.5kg/m2) among U.S. adults from 1988-1994 to 2017-2018, by age.