Describe the dose–response relationship in health promotion.

• A. As exposure to an intervention increases, the observed effect typically increases, up to a point of diminishing returns
• B. As exposure increases, the effect decreases
• C. There is no relationship
• D. Dose is the same as response

Answer: (B)

The dose–response relationship in health promotion is a positive association: increasing exposure to an intervention tends to produce a larger effect, especially early on. As people engage more (more sessions, higher intensity, longer duration), outcomes often improve, but this rise typically levels off eventually, producing diminishing returns. This plateau happens as the population approaches maximal feasible benefit or as factors like adherence, resource limits, or saturation come into play. So the best way to describe it is that more exposure can lead to greater impact, up to a point, rather than the effect decreasing with more exposure or being unrelated or identical to the dose.