|MadSci Network: Medicine|
You have essentially asked 3 questions. 1. Growth promoting hormones used in cattle production are NOT the growth hormone. They increase live weight gain, improve feed conversion ratio, and improve carcass quality (more lean beef). They are steroid hormones. They are not present in any significant levels in commercial beef. Humans produce,naturally, a thousand times more amounts of steroids as given to animals. The EU bans the importation of meat from cattle treated with these growth promoting hormones. The World Health Organization approved the use of the three natural steroid hormones used in beef production. WTO has rejected the EU ban, as it is not based on scientific evidence of harm. 2. This is not a growth hormone responsible for increased heights of people. The reason people are taller in South Korea, Japan, etc. probably has to do with improved nutrition, including better protein, vitamin, mineral, etc. intake than their parents or grandparents living through wars with accompanied malnutrition and depressed food production. 3, Morbid obesity has nothing to do with height. It is, as discussed in the past year in newspapers, news magazines, health publications, etc., due to a large increased intake of sugared foods and beverages, huge portion size of foods, poor diet habits, and especially the lack of exercise in children and adults. Diabetes and other diseases are also accompanied by the huge weight carried by these individuals.
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