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Im Still Ballin
03-31-2015, 07:14 PM
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East Asian people, who appear to be stereotypically shorter, have been increasing their average height relatively quickly through dietary improvements, as seen in nations such as South Korea and the People's Republic of China. [1] [2][3] [4] [5] Cultural influences, such as malnutrition and differences in diet, still prevalent in developing nations such as North Korea and the People's Republic of China, decrease the overall Asian growth rate. [6] [7] [8]

The short stature of East Asians may be contributed by micronutrient deficiency in developing nations or even consuming Asian diets in developed Western nations. These kind of malnutrition [9] such as low calcium intake partially due to lactose intolerance in 90% of their adult population, [10] [11] [12][13] limited consumption of protein, calories,[14] [15]iron,[16][17][18] vitamin A,[19] reduced vitamin D, partially from their nutrition; and also from their darker skin that synthesize vitamin D at a slower rate than whites, [20][21] iodine, [22] [23] [24] [25] [26][27] amongst many other nutritional deficiencies. Other factors, such as the consumption of large quantities of soy products which contains isoflavone may reduce growth rate.[28] [29] zinc,[30][31] amongst many other nutritional deficiencies. Other factors, such as the consumption of large quantities of soy products which contains isoflavone may reduce growth rate.[32][33][34][35][36] [37] Schools in The PRC is giving students soy milk. [38] Also, the Asian diet does not promote as much testosterone as Western diets do. [39] Consumption of white rice, the most popular staple food amongst Asians, and refined noddles and bread, can lead to micronutrient deficiency. [40] The consumption of white rice instead of whole grains, can also instigate a sudden increase of insulin production, which causes hormone imbalance and reduces growth hormones. [40]

Other factors such as their culture that devalues exercise [41][42] and calorie deficiency, and the Great Leap Forward that plausibly created famines, stunted the growth of many Chinese people. Fluoride poisoning and other environmental conditions, which have affects including growth stunting, and affect millions of East Asians. [43] [44] [45] [46]

East Asian cultures value white skin. [47] Many of the Asians often avoid participating in sports to avoid being tanned. [48] Therefore, they will not grow tall due to the lack of exercise and vitamin D defiency from avoiding the sun. [49] [41] Skin whiteners, which are unusually popular amongst Asians, contain toxic chemicals such as mercury or hydroquinone as the active ingredient, stunts growth of Asians including fetuses in pregnant women. [50][51]

Lactose intolerance only affects 2% of Swedish and 5% of Northern European adults and whites have the highest vitamin D intake. Thus, studies hypothesized that this might be an explanation for their relatively tall height.[52] [53][54][55]

Fascinating. It appears to very much be a dietary issue as to why asians (perticularly East asians) are smaller in height and this is probably why they have smaller features (testes/extremities/etc). I think we will see the asian average height slowly increase over time as the western lifestyle becomes more prevalent. Asians have been living a nutrient and vitamin deficient lifestyle for centuries, evolution has taken its toll on the asian genome. I think it might be another 300-400 years before Asians might be similar to modern day whites and blacks in regards to genetic structure and anthropology...

LJJ
03-31-2015, 07:19 PM
I think we will see the asian average height slowly increase over time as the western lifestyle becomes more prevalent. Asians have been living a nutrient and vitamin deficient lifestyle for centuries, evolution has taken its toll on the asian genome.

This has already been happening for a long time now, genius.

Im Still Ballin
03-31-2015, 07:22 PM
This has already been happening for a long time now, genius.
It will still take an extended amount of time before they are comparable in these measurements. Growth doesn't happen over night, it takes generations upon generations to accentuate change in a genome

LJJ
03-31-2015, 07:30 PM
It will still take an extended amount of time before they are comparable in these measurements. Growth doesn't happen over night, it takes generations upon generations to accentuate change in a genome

Look at countries like South Korea and Taiwan. 30 years ago those were poor countries, those countries have undergone a huge development and now they are rich countries. The 20 year olds there tend to be massive compared to their parents.

People in (relatively) poor places like throughout Africa and South America tend to be short and small too.

Im Still Ballin
03-31-2015, 07:51 PM
Perhaps

But why are specific tribes in Africa so tall?

It shall be interesting to see how things unfold in the next century no doubt

rezznor
03-31-2015, 07:56 PM
It will still take an extended amount of time before they are comparable in these measurements. Growth doesn't happen over night, it takes generations upon generations to accentuate change in a genome
my parents are 5'5" and 5'1" i'm 6'. nutrition makes a huge impact.