The Hidden Benefits of Gardening: The Science Behind How Tending to Soil Boosts Mental Health

Weeding, planting seedlings, watering—"gardening" not only involves physical activity but also serves as a "low-cost mental care" that supports mental health in various ways, such as reducing stress, alleviating symptoms of anxiety and depression, restoring concentration, and enhancing self-efficacy. Studies have been emerging that support these benefits. Experts in horticultural therapy suggest that engaging in gardening for 20 to 30 minutes a few times a week can be effective. Randomized controlled trials have shown that participating in community gardens leads to increased fiber intake, more physical activity, and significant reductions in stress and anxiety. Additionally, contact with "beneficial microorganisms" in the soil, serotonin release from sun exposure, and the sense of achievement and social connections fostered by growing plants create a "special synergistic effect" of gardening. This article will delve into the latest scientific findings to explain why gardening helps maintain mental well-being, detailing the mechanisms, practical methods for incorporating gardening into Japanese living environments, and risk management.