Adult underweight

Definition

Proportion of adults aged 18 and older with BMI <18.5 kg/m². Estimates are age-standardized.

Relevance

Adults who are underweight may not be receiving the adequate amount of energy and macronutrients, placing them at greater risk for micronutrient deficiencies, osteoporosis, infection, and mortality. Women of reproductive age who are underweight may be at greater risk for adverse pregnancy outcomes if they become pregnant.