Primary care physicians frequently face situations in which social and environmental determinants strongly impact health outcomes. Using a clinical vignette, this article applies the Solar and Irwin framework to analyze the mechanisms underlying social health inequalities. A simple collective intervention, such as a supervised walking group, illustrates how primary care teams can impact social isolation, local environments, and treatment adherence. Intersectoral collaboration and strong territorial anchoring enhance both effec- tiveness and sustainability. Such initiatives encourage a shift in perspective, viewing care as a community-based process that complements traditional medical consultations.