It is hardly remarkable but it has finally been reported (http://www.guardian.co.uk/science/2008/jul/24/foodtech.medicalresearch) that the phytoestrogens (plants may generate these compounds as a protective measure against grazers) in soya (much used as a replacement for animal protein in our diet) reduces the sperm count in humans. These effects will probably make it harder for couples to conceive (perhaps, given the challenges of overpopulation, not a wholly negative effect?). It could, of course, if other policies prevail, greatly increase the bills for fertility treatments (perhaps, bizarrely, vegetarianism should be added to smoking, obesity and excessive alcohol consumption as contra-indications for NHS funding of fertility treatments?). It does seem that some forms of vegetarianism might have some unexpected consequences. This is without getting into the issues surrounding the apparently inexorable spread of soya across the planet (in animal feed as well as directly into the human diet).
This blog may help people explore some of the 'hidden' issues involved in certain media treatments of environmental and scientific issues. Using personal digital images, it's also intended to emphasise seasonal (and other) changes in natural history of the Swansea (South Wales) area. The material should help participants in field-based modules and people generally interested in the natural world. The views are wholly those of the author.
Friday, 25 July 2008
Sperm Wars:Soya and Fertility?
It is hardly remarkable but it has finally been reported (http://www.guardian.co.uk/science/2008/jul/24/foodtech.medicalresearch) that the phytoestrogens (plants may generate these compounds as a protective measure against grazers) in soya (much used as a replacement for animal protein in our diet) reduces the sperm count in humans. These effects will probably make it harder for couples to conceive (perhaps, given the challenges of overpopulation, not a wholly negative effect?). It could, of course, if other policies prevail, greatly increase the bills for fertility treatments (perhaps, bizarrely, vegetarianism should be added to smoking, obesity and excessive alcohol consumption as contra-indications for NHS funding of fertility treatments?). It does seem that some forms of vegetarianism might have some unexpected consequences. This is without getting into the issues surrounding the apparently inexorable spread of soya across the planet (in animal feed as well as directly into the human diet).
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