Japan: 81.25 Years
Japan has one of the lowest adult obesity rates in the industrialized world, at only 3 percent. As in Hong Kong, this is mainly due to a healthful diet based around vegetables, fish, rice and noodles. Many Japanese people also stop eating when they feel about 80 percent full, rather than continuing until they can't manage another mouthful. The Japanese are also much less reliant on cars than people in Western countries, preferring to walk whenever possible, and therefore get plenty of exercise.