This article examines the current state of health in Japan, focusing on lifestyle-related illnesses, mental illness, obesity and diabetes. It explores the factors contributing to poor health outcomes such as a lack of physical activity and unhealthy diets, as well as the challenges facing Japan's healthcare system. It also discusses the impact of poor health on the economy and outlines government initiatives to improve health outcomes. Finally, it looks at the potential benefits of improved public health for individuals and businesses alike.