why did us humans become way taller from 1900 to 1990? Is there a scientific reason to it? Why are we not becoming any taller in recent years?
In: Biology
Improved nutrition. This can be readily seen when comparing ethnic groups whose children were born and raised in wealthy countries with their relatives who are poor and still live in poorer countries where food scarcity is still the norm. The result is a noticeable height difference between very closely related people (first cousins, etc).
The reason we haven’t seen the trend continue is that nutritional availability allows someone to more fully meet their maximum height determined by their genetics, but doesn’t allow you to exceed it. So, especially in countries where food scarcity is uncommon, more people approach their maximum potential height today than they did in 1900.
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