Physical Activity May Reduce the Influence of Genetic Risk on Depression Severity

Depression is influenced by multiple factors, including genetics, life experiences, physical health, social conditions and environmental stress. Genetic susceptibility does not determine an individual's mental-health outcome, and the relationship between inherited risk and depression can vary across individuals. The study examined whether physical activity was associated with the relationship between genetic risk and the severity of depressive symptoms. The findings suggest that more active individuals may experience a less pronounced association between genetic susceptibility and symptom severity. Physical activity may support mental health through several pathways, including sleep regulation, stress management, social interaction and changes in brain signalling. Suitable exercise can include walking, cycling, swimming, resistance training or other activities matched to a person's abilities. However, an association does not establish that exercise directly counteracts genetic risk or can independently treat major depression. People experiencing persistent depression should seek appropriate professional assessment, and exercise should be viewed as a possible complement to evidence-based care.