A new, unprecedented study conducted by a large research consortium led by
INRA reports that a diet based on MON 810 or NK603 transgenic maize does not
affect the health or metabolism of rats. Under the conditions of GMO 90+1
project, the researchers did not detect any harmful effects of the MON810
and NK603 maize diets on the health and metabolism of rats, even after a
lengthy exposure period.

For six months, rats were fed a diet that contains either genetically
modified (GM) maize (MON 810 or NK603) or non-GM maize, in varying
concentrations. Using high-throughput biology techniques, the researchers
did not find any significant biological markers related to the transgenic
maize diet. Neither did anatomic pathology examination reveal any alteration
of the liver, kidneys, or reproductive system of the rats whose diet
contained GM maize. The period of six months, which is double that of the
test required by European regulations, is equivalent to one third of the
average lifespan of rats.

[academic.oup.com]
36972