Which best describes upstream approaches in public health?

• A. Upstream is unrelated to population health.
• B. Upstream addresses policies and social determinants such as housing, employment, and education.
• C. Downstream focuses on individual behavior and treatment.
• D. Upstream is only about advertising against bad habits.

Answer: (B)

Upstream approaches in public health focus on the conditions in which people live and the policies that shape those conditions, aiming to prevent problems before they start. This means addressing social determinants like housing, employment, and education because these factors influence health risks and opportunities across whole communities. By changing policies and the broader environment, public health can reduce disease and improve equity at a population level rather than waiting to treat individuals after illness occurs. In this sense, upstream work is not about isolated ads or unrelated factors; it’s about shaping the context that determines health outcomes. Downstream, by contrast, targets individual behavior and treatment after problems arise, and saying upstream is only about advertising is too narrow to capture the broader policy and structural changes involved.