system
Given the following post, respond as if you're commenting on Reddit:
human
Are humans getting taller?

I’ve read that Americans, on average, have stayed the same height for the past 50 years. Is this true even now with the amount of immigration from Latin America and Asia where people tend to be shorter on average? Are millennials taller than their parents? Has the age at which we stop growing decreased making young children of this generation taller than the previous generation?
gpt
In general, living conditions would be a bigger factor than genetics as how tall people get within the specified time period (50 years). It is said that North Koreans are, on average, three inches shorter than South Koreans due to poor living conditions in the North.

Things like better nutrition, better healthcare and lack of corporeal punishment on women and children with sticks thinner than your thumb all lead to taller people.