You may have noticed that your generation is taller than the previous generation and shorter than the next generation. So what is the reason behind this situation?
The fact that the ceiling and door of the old village houses are shorter is also related to this situation. You may have to bow your head when entering these houses. This is because previous generations according to today’s generation that’s shorter.
people a century ago His average height was considerably shorter than today’s average height. People who could be considered tall at that time had a stature that could be considered short for today.
Height differences are affected by genetic variation, but of course, this is not the only reason.
A geographic distribution of the average height of people aged 18 (2014)
Height distribution can also be affected by the amount of environmental diversity. The main reason for this situation is related to this. Health and nutrition conditions Genetic variation would be the only factor influencing height distribution in a population of the same size, but these conditions are unlikely to be equal all the time.
Since the conditions are not the same, wealthy individuals who can reach better nutrition and health conditions are deprived of them. compared to poor individuals they get longer. Genetic diversity is not the only determinant, and the effect of environmental diversity is felt significantly in height distribution.
If we give an example from the caste system in India; average of individuals in a high class than individuals in a lower class 4.5 cm found to be longer.
In a study conducted in Spain, it was found that educated people are about 1 cm taller than uneducated people. Average height of lower-status workers (eg agricultural worker) with less access to health and nutrition compared to the height of higher-status workers (eg: lawyer, doctor) 3.6cm found to be shorter.
Nutrition quality in childhood is very important, new generations are getting longer as the quality has increased in the last century.
Average height of Dutch, German and French people from 1800 to 1980 (from top to bottom)
Moreover, it is not only the size quality intelligence quality increases with good nutrition.
Of course there is a limit to stature, of course we will not one day turn into 5-meter creatures and as our genetics allow we will enjoy the privileges of adequate nutrition.
Sources: 1, 2, 3
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