The study was conducted to evaluate one aspect of the entropy theory of aging, which hypothesizes that aging results from increasing disorder within the body, and predicts that increasing mass lowers lifespan. The first evaluation of the impact of human size on longevity or lifespan in 1978, which was based on data for decreased groups of athletes and famous people in the USA, suggested that shorter, lighter men live longer than their taller, heavier counterparts.⁠ ⁠ _____⁠ ⁠ In 1990, a study of 1679 men and women from the general American population supported these findings. In the present study, data on the height, weight, and age at death of 373 men were obtained from records at the Veterans Administration Medical Center, San Diego, CA, USA. Men of height 175.3 cm (5'8" in) or less lived an average of 4.95 years longer than those of height over 175.3 cm (5'8" in), while men of height 170.2 cm (5'5" in) or less lived 7.46 years longer than those of at least 182.9 cm (6 feet). An anal...