Even though genetically modified organisms (GMOs) were sneaked into our food supply over 15 years ago, there have been limitations on the tests that could be performed on these foods. But science is finally starting to reveal the true potential dangers associated with consuming these “Frankenfoods”—and it’s looking scarier by the minute.

Last year, researchers gave us an eye-opening sneak peek into some of the problems linked to GMOs. This study clearly showed that GMO-fed rats suffered unbelievable damage to their kidneys and livers—mostly in the form of golf ball- (or larger) sized tumors.