Lifestyle Medicine and Japan's Longevity Miracle.

With Japan's economic growth, its life expectancy increased from 1965, and since 1980, Japan has become one of the longest-lived countries in the world. Strong government-led initiatives such as low-cost health insurance, widely distributed health screenings, a new law to prevent non-communicable diseases established in 1956, Shokuiku (Japanese culinary education), and stress-measuring systems in the workplace contributed to the population's longevity. In addition to these public initiatives, Japan has benefited from evolving lifestyle practices over its long history. These include Washoku (Japanese traditional food), which utilizes the complex interaction of individual nutrients unique to Japan as well as numerous metabolically active compounds, the interrelation of Japan's population levels with its plant-dominant diet, a mindful culture connected with nature, and the principle of hara-hachi-bu (Confucianism-based caloric restriction habit; "eat until 80% full"), and so on. In 2002, Japan took the remarkable action of stipulating by law that citizens must deepen their interest in and understanding of the importance of healthy lifestyle habits, be aware of their own health status, and strive to improve their health throughout their lives. Today, to protect its future, Japan must face a new challenge: a population that is declining and is the world's fastest-aging.