Ten common causes of erectile dysfunction, page 14 of 14
Link to this article!Sources and references (cont'd...)
(14) "Supplementation with vitamin D does not increase serum testosterone levels in healthy males." By R. Jorde, et al., Department of Clinical Medicine, Troms? Endocrine Research Group, University of Tromso, Tromso, Norway. Horm Metab Res. 2013 Sep;45(9):675-81. doi: 10.1055/s-0033-1345139,PMID 23686706.
(15) "Clinical utility of vitamin d testing: an evidence-based analysis." Ont Health Technol Assess Ser. 2010;10(2):1-93. Epub 2010 Feb 1., Health Quality Ontario,
PMID 23074397, PMCID PMC3377517.
(16) "Effect of zinc administration on plasma testosterone, dihydrotestosterone, and sperm count." By A. Netter, R. Hartoma, and K. Nahoul. Arch Androl. 1981 Aug;7(1):69-73,
PMID 7271365.
(17) "Zinc status and serum testosterone levels of healthy adults." By A.S. Prasad, C.S. Mantzoros, F.W.Beck, J.W. Hess, G.J. Brewer. Department of Internal Medicine, Wayne State University School of Medicine, Detroit, Michigan, USA. Nutrition. 1996 May;12(5):344-8,
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(18) "The effect of protein intake on boar libido, semen characteristics, and plasma hormone concentrations." By G.F. Louis, et al., J Anim Sci. 1994 Aug;72(8):2038-50,
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(19) "Low protein intake: the impact on calcium and bone homeostasis in humans." by J.E. Kerstetter, K.O. O'Brien, and K.L. Insogna; J Nutr. 2003 Mar;133(3):855S-861S,
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(20) "Vitamin side effects revealed" by Frank W. Cawood, pp.51-52, ISBN 0-915099-04-7
(21) Personal experiences of the author.
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