There is no evidence that GMOs cause harm to humans of any age, and the vast majority of reputable scientific organizations agree that they are safe for consumption, according to the Genetic Literacy Project. Respected groups such as the American Medical Association agree that GMOs are safe.
GMOs are a very recent addition to people's diets, so it is possible that later studies may reveal health concerns linked with their consumption. There are some anti-GMO organizations that make claims that some studies have already revealed risks in consuming genetically modified foods, but these studies are heavily flawed. One such commonly cited study claims that genetically modified corn causes tumors in rats, but a closer examination of the study reveals that the experimenter failed to perform statistical analyses or use enough rats, according to the Genetic Literacy Project.