Which intervention best illustrates primary prevention at the individual level?

• A. Developing customized smoking cessation materials
• B. Providing bike safety education to parents of school-age children
• C. Screening for hypertension
• D. Treating dental caries

Answer: (A)

Primary prevention aims to stop disease from occurring in the first place by reducing or removing risk factors before any illness develops. Developing customized smoking cessation materials directly helps an individual quit tobacco use, which lowers the person's risk of tobacco-related diseases such as heart disease, stroke, and cancer. Tailoring materials to the individual’s readiness to change, literacy level, and cultural context makes quitting more achievable, making this a proactive move to prevent disease at the personal level.

By contrast, bike safety education for parents focuses on preventing injuries to children through parental actions, which is still valuable for health but not a direct, single-individual primary prevention intervention. Screening for hypertension is about early detection to prevent complications and falls under secondary prevention. Treating dental caries addresses an existing condition rather than preventing its occurrence, so it’s not primary prevention.