Japan has one of the highest life expectancies in the world, with an average of 84.6 years. This is due to the nation's focus on health and wellness, with its citizens living a healthy lifestyle and receiving regular medical and dental checkups. Additionally, Japan has a strong culture of valuing and preserving the elderly, providing them with necessary support and care. Furthermore, the government has invested heavily in public health, providing access to quality healthcare and subsidizing medical costs. Finally, the country's food culture, low levels of stress, and clean environment all play a role in the nation's high life expectancy.