Date:   1/3/2010 6:41:16 AM ( 14 y ago)
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URL:   https://www.curezone.org/forums/fm.asp?i=1548713

Here are the results of "the biggest human study into the effects of soy on fertility" - their words not mine.

http://www.theage.com.au/national/soy-products-linked-to-low-sperm-count-2008...



FIRST it was tight jeans and hot spas, but now research suggests soy-based products may reduce a man's sperm count.

A study that monitored the soy consumption of 99 men has found those who consumed more than two portions of soy-based foods a week had, on average, 41 million fewer sperm per millilitre of semen than men who had never eaten soy food.

The apparent fall in sperm count is unlikely to make healthy men infertile, but some experts said it could have a significant impact on those already with lower than average sperm counts. A sperm count of 80 million to 120 million per millilitre is regarded as normal, while men who produce fewer than 20 million sperm per millilitre are regarded as clinically subfertile.

As a cheap source of protein, soy-based products have risen steadily in western diet popularity since the 1940s and are now included in many products, including biscuits, sweets, pasta and bread.

The study, by Dr Jorge Chavarro at Harvard school of public health in Boston, builds on research in animals and on human tissues that has suggested certain ingredients in soy could harm sperm production.

In the biggest human study into the effects of soy on fertility, Dr Chavarro and colleagues at Massachusetts General Hospital recruited 99 men who had visited a fertility clinic between 2000 and 2006. They were asked to fill out a survey which asked them about the amounts of 15 different soy foods they had eaten over the previous three months.

The researchers then divided the men into four groups according to the levels of chemicals called isoflavones in their diets. (Isoflavones are ingredients in soy products that mimic the female sex hormone, oestrogen.) Each man then provided a sperm sample for testing.

Dr Chavarro found that men who consumed at least half a portion of soy food a day had the lowest sperm count. "Our findings suggest that the greater the soy food intake, the lower the sperm concentration, compared with men who never consume soy food," said Dr Chavarro, whose study appears in the journal Human Reproduction.


Also i will post this article because something like 90-95% of soy in the US is GM

The Independent on Sunday, 08 January 2006
http://news.independent.co.uk/environment/article337253.ece



Women who eat Genetically-Modified foods while pregnant risk endangering their unborn babies, startling new research suggests.

The study - carried out by a leading scientist at the Russian Academy of Sciences - found that more than half of the offspring of rats fed on modified soya died in the first three weeks of life, six times as many as those born to mothers with normal diets. Six times as many were also severely underweight.

The research - which is being prepared for publication - is just one of a clutch of recent studies that are reviving fears that Genetically-Modified food damages human health. Italian research has found that modified soya affected the liver and pancreas of mice. Australia had to abandon a decade-long attempt to develop modified peas when an official study found they caused lung damage.

And last May this newspaper revealed a secret report by the biotech giant Monsanto, which showed that rats fed a diet rich in Genetically-Modified corn had smaller kidneys and higher blood cell counts, suggesting possible damage to their immune systems, than those that ate a similar conventional one.

The United Nation's Food and Agriculture Organisation held a workshop on the safety of genetically modified foods at its Rome headquarters late last year. The workshop was addressed by scientists whose research had raised concerns about health dangers. But the World Trade Organisation is expected next month to support a bid by the Bush
administration to force European countries to accept GM foods.

The Russian research threatens to have an explosive effect on already hostile public opinion. Carried out by Dr Irina Ermakova at the Institute of Higher Nervous Activity and Neurophysiology of the Russian Academy of Sciences, it is believed to be the first to look at the effects of GM food on the unborn.

The scientist added flour from a GM soya bean - produced by Monsanto to be resistant to its pesticide, Roundup - to the food of female rats, starting two weeks before they conceived, continuing through pregnancy, birth and nursing. Others were given non-GM soyaand a third group was given no soya at all.

[B]She found that 36 per cent of the young of the rats fed the modified soya were severely underweight, compared to 6 per cent of the offspring of the other groups. More alarmingly, a staggering 55.6 per cent of those born to mothers on the GM diet perished within three weeks of birth, compared to 9 per cent of the offspring of those fed normal soya, and 6.8 per cent of the young of those given no soya at
all.[\B]

"The morphology and biochemical structures of rats are very similar to those of humans, and this makes the results very disturbing" said Dr Ermakova.
"They point to a risk for mothers and their babies."

Environmentalists say that - while the results are preliminary - they are potentially so serious that they must be followed up. The American Academy of Environmental Medicine has asked the US National Institute
of Health to sponsor an immediate, independent follow-up.


What the experiment found

Six times as many of the offspring of those fed the modified soya were severely underweight compared to those born to the rats given normal
diets.

Within three weeks, 55.6 per cent of the young of the mothers given the modified soya died, against 9 per cent of the offspring of those fed the conventional soya.
 

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