![]() ![]() (Image credit: NCD Risk Factor Collaboration (NCD-RisC)) This color-coded map shows where the tallest and shortest men lived in 19. Because conditions such as childhood illness and poor nutrition during pregnancy and childhood can stunt growth, the average height of people can serve as a proxy for how healthy their nation is, the researchers said. People's height is partly determined by genetics, but nutrition and environmental factors also play a role, the researchers said. In these countries, the stagnation or decreases in height could be due to a mix of the wealthy people already receiving the maximum amount of nourishment and health care, and lower-class people getting subpar nutrition, especially during pregnancy, study co-author James Bentham, a research associate at the School of Public Health at Imperial College London, told Live Science. In contrast, other countries, especially those in sub-Saharan Africa, North Africa and the Middle East, have actually seen declines in height over the past 30 to 40 years. However, other countries, such as Spain, Italy and several Latin American and East Asian countries, are still increasing in height, they found. ![]() Some countries hit plateaus over the past 30 to 40 years, although they showed increases in height during the first half of the century, the researchers found.įor instance, the United States plateaued, as did the United Kingdom, Finland and Japan. This color-coded map shows where the tallest and shortest women lived in 19. ![]()
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