Natural elements and spaces such as trees, forests, urban and peri-urban forests, urban parks, gardens and green spaces may have not only preventive effects on the life-style related diseases but also enhance people’s health in general. Forests, urban forests and other green spaces may be incorporated into public health systems and policies to promote mental and physical health and reduce morbidity and mortality in residents by supporting relaxation and stress alleviation, stimulating social cohesion, encouraging physical activity, and reducing exposure to air pollutants, noise and excessive heat.