Please help! What is the effect of genetically engineered (modified) food on human health?

None. The poison is in the behavior of the corporations and the protesters, not the technology, which has increased food yields and should belong to humankind, not jealously guarded by mean-minded profiteers. Despite the inflammatory rhetoric and claims, the scientific community -- the most cutthroat of truth-seekers -- has found no health dangers despite 30 years of close study. Don't be afraid.