Thousands of years after that was written, despite immense advances in medicine and technology, these figures remain remarkably accurate. The longest recorded life of a man is precisely 120 years (Shigechiyo Izumi), the average lifespan for a man is roughly 70 years, and the average for a good-living man is about 80 years. | Thousands of years after that was written, despite immense advances in medicine and technology, these figures remain remarkably accurate. The longest recorded life of a man is precisely 120 years (Shigechiyo Izumi), the average lifespan for a man is roughly 70 years, and the average for a good-living man is about 80 years. |