The effects of eating genetically engineered (GE) foods are still largely unknown. The studies that led to the market release of certain genetically modified seeds were conducted by the same companies that manufacture the seeds themselves, and the raw data for these tests have not been released for the public to see. There have been independent, peer-reviewed studies that suggest that there could be harmful effects to human health caused by the use of GMOs and the chemical pesticides and herbicides that go along with them, but again, there has not been enough research done and the jury is still out. Also, without labeling GE foods, we cannot associate any health problems with people who ate them — because we do not know who ate them. Since the FDA has no way to track adverse health effects in people consuming GE foods, and because there is no requirement that food containing GE ingredients be labeled, there is no effective way to gather data on health problems that may be happening.