Human height and the way we develop can serve as an indicator of a couple of important welfare components.
Really? Which welfare components? Nutrition I bet, but what are the others?
Health is the other component.  In certain places with poverty and bad environments, delayed growth can occur from malnutrition.
What else can you tell me about it?
I do know that when certain populations of people share genetic backgrounds, the average height is a characteristic within the group.  Most likely because of the nutrition and other averages for that demographic.
Interesting! Do you know where the tallest people live?
Not in particular but I can tell you that height and intelligence have a positive correlation!
Really? Is that because of the welfare components you told me about earlier?
Height and intelligence
The study of height and intelligence examines correlations between height and human intelligence. Some epidemiological research on the subject has shown that there is a small but statistically significant positive correlation between height and intelligence after controlling for socioeconomic class and parental education. This correlation arises in both the developed and developing world and persists across age groups. There is no scientific consensus on why this correlation arises, but one possible explanation is that height may act as a biomarker for nutritional status and health during intellectual development. One such theory
(around 20% deviation from average) within such a population is sometimes due to gigantism or dwarfism, which are medical conditions caused by specific genes or endocrine abnormalities.
The development of human height can serve as an indicator of two key welfare components, namely nutritional quality and health. In regions of poverty or warfare, environmental factors like chronic malnutrition during childhood or adolescence may result in delayed growth and/or marked reductions in adult stature even without the presence of any of these medical conditions. Some research indicates that a greater height