They've been independently researched by many scientists, organisations & universities for years, and bugger all has been found wrong with them, and nor will anything be found, as it is just another form of cross-breeding/natural selection.But the long term effects of GM crops have not been properly researched
I'd be more worried about plastics, and the fact it is PROVEN to reduce fertility in men & women, as well as causing some cancers, and yet try and avoid plastics.