___ is their ability to use math to understand their health (dosages, lab values, charts/graphs, risk probabilities).

• A. Health literacy
• B. Numeracy skills
• C. Health insurance literacy
• D. Health numeracy

Answer: (D)

Using math to understand health information is health numeracy. This term captures the ability to apply numerical reasoning in medical contexts—such as calculating dosages, interpreting lab values, reading charts and graphs, and estimating risk probabilities. It sits alongside health literacy, which is about understanding health information in general, but the numeracy component emphasizes the numbers and math involved in health decisions. The other options either describe a broader or different skill set—health literacy focuses on general comprehension, numeracy skills alone are just math ability without the health context, and health insurance literacy deals with understanding insurance terms rather than numeric health data.