-- There is a growing body of scientific evidence which proves that genetically-modified organisms (GMOs) are inherently different from natural organisms, including the way the body processes them, as well as how the immune system responds to them. But Monsanto, the largest purveyor of GMOs in the world, believes that GMOs are no different than natural organisms, and that GMO testing is both needless and valueless.
From Monsanto web site
Why arent you running human clinical trials on GM crops?
Because existing food crops are recognized as safe, the logical starting point for safety assessment of a GM food is to ask whats different?
Aspects of the GM crop which are the same as the non-GM counterpart do not require safety assessment. Safety assessment can then be appropriately focused on what is different about the GM crop. All GM crops are analyzed and compared to non-GM counterparts in order to determine whether they have similar concentrations of proteins, carbohydrates, fats, amino acids, fiber, vitamins and a variety of other components. Two crops which are alike in all respects are said to be substantially equivalent.