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[Bane]

If you think average heights are consistently creeping upward and you are worried about your height falling behind the mean, rest assured that average heights have maxed out since 2000. We have met the genetic maximum in height in all categories (race, gender, age) since 2000. This NHANES report by the Center for Disease Control has scientifically measured averages of height from 1999 to 2016. Go to page 7 (mean height in cm) or page 8 (mean height in inches) to see the values.

https://www.cdc.gov/nchs/data/nhsr/nhsr122-508.pdf

There was growth in averages every decade before 2000, but by 2000 the US and the world have maxed out in nutrition and supplements for growing during childhood. It makes sense because the body's internal organs have limits. Every millimeter someone grows, it is a exponential power of 3 you are increasing in weight because body mass increases in 3 dimensions (height, length, width) while height only increases in one dimension. More body mass means more cells and mass for your vital organs, like heart, lungs, kidneys, pancreas, liver, etc... to do work. So the human body has finite limits that cannot grow infinitely.

[Body Builder]

I believe too that people reached their potential.
Also, economic crisis is huge in many west countries and with covid things will get even worse, so it is very possible the next generations to become shorter than now because many people face poverty, even in advanced countries.

[Medium Drink Of Water]

I'm more shocked by how fat everyone is.

[Bane]

It's not just the general population, but average heights have also maxed out in perhaps every sport by 2000.