Using evidence-based models of human behaviour to reduce endocrine-disrupting chemicals exposure: recommendations for strengthening interventions.

Endocrine-disrupting chemicals (EDCs) represent a threat for the ecosystem and human health. Exposure routes include modifiable exposures, such as choice of food or cosmetics but also daily habits such as airing the room. However, current attempts to reduce modifiable exposure often rely on knowledge provision and awareness-raising campaigns. This is the case even though human behaviour, decision making and habits change have been studied for a long time, and numerous psychological theories demonstrate that the transition from awareness of a health threat to actually change daily behaviour is not straightforward. This paper calls for interventions on EDCs exposure reduction to build on solid understanding of human behaviour and use of behaviour change techniques to achieve significant impact. We illustrate how this can be done by presenting the HYPIEND project, a multicomponent behavioural intervention designed to help pregnant women and prepubertal children (and their parents) to reduce their modifiable exposure to EDCs in these sensitive periods. HYPIEND relies on theoretical models such as the Health Action Process Approach (HAPA) model, motivational interviewing techniques, and broader support through partners (for pregnant women) and the school environment (for children) through a school-wide project built on the School Wide Positive Behavioural Interventions Supports.