Edited sentence: Also, the Asian diet does not promote as much testosterone as Western diets do.Consumption of white rice, the most popular staple food amongst Asians, and refined noddles and bread, can lead to micronutrient deficiency.Fluoride poisoning and other environmental conditions, which have affects including growth stunting, and affect millions of East Asians.Lactose intolerance only affects 2% of Swedish and 5% of Northern European adults and whites have the highest vitamin D intake.Other factors such as their culture that devalues exercise.Other factors, such as the consumption of large quantities of soy products which contains isoflavone may reduce growth rate.Schools in The PRC is giving students soy milk.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.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  such as low calcium intake partially due to lactose intolerance  in 90% of their adult population,    limited consumption of protein,   iron,.Thus, studies hypothesized that this might be an explanation for their relatively tall height.and calorie deficiency, and the Great Leap Forward  that plausibly created famines, stunted the growth of many Chinese people.vitamin A, reduced vitamin D, partially from their nutrition; and also from their darker skin that synthesize vitamin D at a slower rate than whites,   iodine,.zinc, amongst many other nutritional deficiencies