""Genes don't change that fast and they don't vary that much across the world. So changes over time and variations across the world are largely environmental.""
""Average heights in several nations, such as Japan, South Korea, and China, have increased in recent years, while in some sub-Saharan African nations, such as Uganda and Sierra Leone, they have decreased.""
A 2020 study indicates a 20-centimeter height difference between the tallest and shortest countries. The Netherlands has the tallest average height at 6 feet 0.36 inches. Many of the shortest countries are in Africa and Southeast Asia. Environmental factors, such as diet, significantly impact height variations, while genetics play a lesser role. Average heights in countries like Japan and South Korea have increased, while some sub-Saharan African nations have seen decreases. The NCD study provides mean heights for 19-year-olds in various countries.
Read at www.businessinsider.com
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