In the case of serious aging, why did World Health Day put forward the slogan "Health is good for longevity" this year? This is a good question. This is a question of outlook on life or the world. Man is the soul of the universe and the cradle of man in the universe. Taking the long river of time as the key link, human beings in different periods are constantly produced, born, grown and destroyed. Cycle after cycle. Human beings are the soul of the universe, and youth, middle age and old age are all precious wealth of human beings. Humans will protect their wealth at all costs, which is why this year's World Health Day will put forward the slogan "Health is good for longevity" in the case of serious aging.