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 GM 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.