A link between tofu and male infertility?

I just found this article in The Straits Times..I guess I didn't notice it just now when I first read it..This is rather interesting..I think I'll post the heatwave article tomorrow coz anyway..it's a rather long one..Okay..so researchers in copenhagen has discovered a link between soya products and sperms in male..here's how it goes: "A plant chemical found in soya, tofu and legumes could potentially damage sperm and affect male fertility, a British researcher says.
Professor Lynn Fraser of King's College, London, has shown that genistein, which can mimic the effect of the female hormone oestrogen, affects sperm in mice.But it seems to have an even stronger impact on human sperm.In laboratory tests, Prof Fraser found that small amounts of the chemical can cause human sperm to 'burn out' and lose fertility.'Human sperm proved to be even more responsive than mouse sperm to genistein,' Prof Fraser said at a recent fertility meeting.She said that if women eat soya and foods high in genistein it might have a bigger impact on male fertility because the chemical is likely to affect sperm when it is in the female, preparing to fertilise an egg.'Maternal exposure to the compounds is probably more important than paternal exposure,' she said.Although it is very preliminary research, Prof Fraser speculated that the findings could have an impact on women trying to conceive.'On the basis of what we have seen, it might be a practical thing to do if you are in the habit of eating lots of soya-based products to restrict your diet for a short time over the window of ovulation,' she told the European Society of Human Reproduction and Embryology.Professor Richard Sharpe of Edinburgh University, in Scotland, described the research as interesting and the results as surprising.But Prof Sharpe added that oriental societies that traditionally eat a soya-rich diet show no signs of reduced fertility that he is aware of.The effects on sperm in the laboratory may not be directly related to what happens in real life.Dr Allan Pacey of the University of Sheffield said: 'It's early days, but clearly if what happens in the laboratory also occurs in the woman's fallopian tube as the sperm make their way to the egg, then there would be the potential for fertilisation to fail.' " Well..maybe researchers could think of how to develop contraceptives from soya products then?