Thank you for your question. I understand your concerns about safety, and as a toxicologist (who loves food!), I can assure you that safety is a high priority for me, too.
The body of scientific evidence overwhelmingly points to the safety of biotech crops for people and the planet. Major scientific organizations and regulatory agencies around the world have reviewed the research on GM crops and reached consensus on their safety. More than 1,000 studies on biotechnology are available at Biofortified.
In a study published in 2012, the University of Nottingham School of Biosciences conducted a review of 12 long-term studies and 12 multigenerational studies of GM foods. These studies ranged up to two years or up to five generations. They concluded there is no evidence of health hazards. Their results are available here. In addition, the European Food Safety Authority has determined that the food and feed from many GM crops is safe for import, and the European Commission has published multiple reviews of the biotech science concluding that they are as safe as their non-GM counterparts.
Companies who develop GM crops conduct numerous studies throughout the research and development process, which can take up to 13 years. During the regulatory science phase alone, more than 50 studies on food, feed and environmental safety may be conducted.