April 4th, 2020

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Title:
Twinning and Higher Intake of Dairy Products
Authors:  Gary Steinman, M.D., Ph.D.
  I appreciate the interest in my recently published paper on the effect of diet on twinning.1 Let me emphasize that the purpose of that paper was to report new insights into reproductive physiology and not to undermine any commercial venture. Of major concern was the role of insulin-like growth factor (IGF) on ovarian sensitization to follicle-stimulating hormone (FSH); of minor interest was the effect of growth hormone administered to milk-producing cows.
1) A number of papers have reported a 10-30% increase in serum IGF with measured milk consumption by humans.2-5 In my paper I cited the study that correlated national dizygotic twinning rates (TR) to average milk consumption in 15 European countries (TR range of 5.9-12.2 per 1,000, with a parallel consumption range of 8.2-30.4 g/d).
Keywords:  insulin like growth factor-1, twinning, bovine somatotropin
   
   
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