Which statement best describes the determinants of chronic disease?

• A. A single cause
• B. Genetics only
• C. Lifestyle only
• D. Multi-causal with varying influence

Answer: (D)

Chronic diseases develop from a mix of interacting factors rather than a single cause. The risk comes from biological factors (like genetics and physiology), behaviors (such as diet, physical activity, and tobacco use), and environmental and social influences (including access to healthcare, stress, and socioeconomic status). Importantly, the influence of these determinants varies between individuals and between diseases, and factors can amplify or mitigate each other over time. This multi-factor, varying-influence pattern best describes how chronic diseases arise, recognizing both gene–environment interactions and the cumulative nature of risk factors over a lifespan.