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What percentage of height is genetic and what percentage of it is environmental?

M
MrHandsome
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Posts: 43
Joined: Mar 2017
Posted on Apr 27, 2017, 2:50 pm
#1
I've heard of studies quoting that 80% of height is genetic and 20% is environmental. If that is the case then certainly having a bad upbringing can stunt your growth.
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O
onemorefoot
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Posts: 231
Joined: Jul 2016
Posted on Apr 27, 2017, 4:01 pm
#2
The real thing is that we dont know a sh+! About growth, just see Dennis Rodman , nobody in hell knows what happened to him. The cases when fathers are 5' And the sons end being 6 2", And Many times there wasnt a tall relative, all the fking family is short, do you think we can start discussing percentages?
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B
Body Builder
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Posts: 441
Joined: Feb 2017
Posted on Apr 27, 2017, 5:13 pm
#3
97%+ genetic.
3% or less environmental.

If only 80% was genetic, then that means that the same man with good nutrition would have been 1.90 but with bad nutrition 1.60 and less.
This is ridiculous. Max 3-4cm more you can gain with good nutrition, not 30cm!


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M
MrHandsome
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Posts: 42
Joined: Mar 2017
Posted on Apr 27, 2017, 5:59 pm
#4
Quote from: Body Builder on April 27, 2017, 05:13:57 PM97%+ genetic.
3% or less environmental.

If only 80% was genetic, then than means that the same man with good nutrition would have been 1.90 but with bad nutrition 1.60 and less.
This is ridiculous. Max 3-4cm more you can gain with good nutrition, not 30cm!

Yeah makes sense. Honestly environment is only probably 3-5 percent.
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P
Penguinn
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Posts: 124
Joined: Jul 2015
Posted on Apr 28, 2017, 10:46 am
#5
Even 5% of total height is a lot.
For a 5'7er(170cm), 5% is 8.5cms which is almost 3.5 inches. Even for a 5'2er, it's over 3 inches.


There's just no way 20% of height is controlled by your environment; unless they mean 20% within a range. For example if the male range is 5'2 to 6'5 and they mean 20% of the 15 inch range which is 3 inches.. that's relatively more sensible.
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I
IwannaBeTaller
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Joined: Jun 2014
Posted on Apr 28, 2017, 11:55 am
#6
Quote from: Penguinn on April 28, 2017, 10:46:20 AMEven 5% of total height is a lot.
For a 5'7er(170cm), 5% is 8.5cms which is almost 3.5 inches. Even for a 5'2er, it's over 3 inches.


There's just no way 20% of height is controlled by your environment; unless they mean 20% within a range. For example if the male range is 5'2 to 6'5 and they mean 20% of the 15 inch range which is 3 inches.. that's relatively more sensible.

These percentage numbers are based on the average height - meaning that if a person is 170, and the average is 178, 80% of these 8 cm difference are genetic and 20% (which is 1.6 cms) are environmental.
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P
Penguinn
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Posted on Apr 28, 2017, 4:16 pm
#7
Quote from: IwannaBeTaller on April 28, 2017, 11:55:36 AMThese percentage numbers are based on the average height - meaning that if a person is 170, and the average is 178, 80% of these 8 cm difference are genetic and 20% (which is 1.6 cms) are environmental.

That creates another problem. If 2 kids, 1 with 6' parents and one with 5'5 parents are both 2 inches below average, is it still only 80% genetic? It's possible cause having 6' parents isn't a 100% guarantee your genes won't set you up to be below average.
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O
onemorefoot
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Posted on Apr 28, 2017, 6:36 pm
#8
Then, why the average height in Holland  has increased 14 cm in the last century? Because of genetics or better nutrition? Why the average height in USA has been the same since the last 50-60 years? Do you think nutrition in developed countries has reached its peak together with sanity? If yes why the average height in Norway or Holland continues increasing? I almost agree that genetics is the most importan predictor, although there are Many things we dont know yet.
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G
google42
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Posts: 482
Joined: Mar 2017
Posted on Apr 28, 2017, 6:52 pm
#9
Quote from: onemorefoot on April 28, 2017, 06:36:08 PMThen, why the average height in Holland  has increased 14 cm in the last century? Because of genetics or better nutrition? Why the average height in USA has been the same since the last 50-60 years? Do you think nutrition in developed countries has reached its peak together with sanity? If yes why the average height in Norway or Holland continues increasing? I almost agree that genetics is the most importan predictor, although there are Many things we dont know yet.
I read somewhere that it's partially do to better nutrition and natural selection, taller people there have more kids than shorter people. Genetics also play a big role in determining height, I think there are over 100 genes that have an affect on height. There are many factors at play.
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I
IwannaBeTaller
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Posts: 99
Joined: Jun 2014
Posted on Apr 28, 2017, 8:20 pm
#10
Quote from: onemorefoot on April 28, 2017, 06:36:08 PMThen, why the average height in Holland  has increased 14 cm in the last century? Because of genetics or better nutrition? Why the average height in USA has been the same since the last 50-60 years? Do you think nutrition in developed countries has reached its peak together with sanity? If yes why the average height in Norway or Holland continues increasing? I almost agree that genetics is the most importan predictor, although there are Many things we dont know yet.

Actually it has stopped increasing since 1990.
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