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Topic	Impossible Burger Has 18 Million Times More Estrogen
Dampproof 12/24/19 3:04:02 PM #59:	CEs_EFG posted... https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3655573/ In spite of many limitations in conducting well-designed human studies, information gathered from already published ones combined with the large number of animal studies already available, clearly demonstrate that phytoestrogens have the ability to influence the reproductive performance of an adult. No strong evidence associates high phytoestrogen intake with fertility problems in humans. https://www.ncbi.nlm.nih.gov/pubmed/16005180 Among 425 papers we reviewed 81 publications with appropriate information. With the possible exception of testicular cancer there is no strong epidemiological evidence to indicate that prenatal exposure to estrogen are linked to disturbed development of the male reproductive organs. https://www.ncbi.nlm.nih.gov/pubmed/19919579 as a result of the paucity of human studies and as numerous reports did not reveal any adverse effects on male reproductive physiology. https://www.ncbi.nlm.nih.gov/pubmed/21941185 There are some reports indicating negative association between exposure to certain chemicals and sperm parameters such evidence has not been found for phytoestrogens. https://www.ncbi.nlm.nih.gov/pubmed/19524224 The results of this meta-analysis suggest that neither soy foods nor isoflavone supplements alter measures of bioavailable T concentrations in men. https://www.ncbi.nlm.nih.gov/pubmed/11352776 The present study determines the effects of a short-term phytoestrogen supplement on semen quality and serum sex steroid and gonadotrophin levels in human males. Healthy volunteers took a supplement containing 40 mg of isoflavones daily for 2 months and donated blood and semen samples monthly for 2 months before and 4 months after supplementation. Semen samples were analysed for ejaculate volume, sperm concentration, total sperm count, motility and morphology. Blood samples were analysed for sex hormone and gonadotrophin levels and phytoestrogen concentrations, and testicular volume was measured using an orchidometer. The phytoestrogen supplement increased plasma genistein and daidzein concentrations to approx. 1 microM and 0.5 microM respectively; yet, there was no observable effect on endocrine measurements, testicular volume or semen parameters over the study period. This is the first study to examine the effects of a phytoestrogen supplement on reproductive health in males. We conclude that the phytoestrogen dose consumed had no effect on semen quality. --- "Cyberspace is - or can be - a good, friendly and egalitarian place to meet." - Douglas Adams <cite>Dampproof posted [p:932009744] in Impossible... [t:78279164]...</cite> <quote>CEs_EFG posted... </cite> <quote>https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3655573/ In spite of many limitations in conducting well-designed human studies, information gathered from already published ones combined with the large number of animal studies already available, clearly demonstrate that phytoestrogens have the ability to influence the reproductive performance of an adult.</quote> No strong evidence associates high phytoestrogen intake with fertility problems in humans. https://www.ncbi.nlm.nih.gov/pubmed/16005180 <quote>Among 425 papers we reviewed 81 publications with appropriate information. With the possible exception of testicular cancer there is no strong epidemiological evidence to indicate that prenatal exposure to estrogen are linked to disturbed development of the male reproductive organs.</quote> https://www.ncbi.nlm.nih.gov/pubmed/19919579 <quote>as a result of the paucity of human studies and as numerous reports did not reveal any adverse effects on male reproductive physiology.</quote> https://www.ncbi.nlm.nih.gov/pubmed/21941185 <quote>There are some reports indicating negative association between exposure to certain chemicals and sperm parameters such evidence has not been found for phytoestrogens.</quote> https://www.ncbi.nlm.nih.gov/pubmed/19524224 <quote>The results of this meta-analysis suggest that neither soy foods nor isoflavone supplements alter measures of bioavailable T concentrations in men.</quote> https://www.ncbi.nlm.nih.gov/pubmed/11352776 <quote>The present study determines the effects of a short-term phytoestrogen supplement on semen quality and serum sex steroid and gonadotrophin levels in human males. Healthy volunteers took a supplement containing 40 mg of isoflavones daily for 2 months and donated blood and semen samples monthly for 2 months before and 4 months after supplementation. Semen samples were analysed for ejaculate volume, sperm concentration, total sperm count, motility and morphology. Blood samples were analysed for sex hormone and gonadotrophin levels and phytoestrogen concentrations, and testicular volume was measured using an orchidometer. The phytoestrogen supplement increased plasma genistein and daidzein concentrations to approx. 1 microM and 0.5 microM respectively; yet, there was no observable effect on endocrine measurements, testicular volume or semen parameters over the study period. This is the first study to examine the effects of a phytoestrogen supplement on reproductive health in males. We conclude that the phytoestrogen dose consumed had no effect on semen quality.</quote> --- "Cyberspace is - or can be - a good, friendly and egalitarian place to meet." - Douglas Adams</quote> ... Copied to Clipboard!
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