WHO says that GM foods currently available on the international market have passed safety assessments and are not likely to present risks for human health.

The National Academies state that there is no validated evidence that foods made from GMOs are less healthy than non-GMO foods. They report that long-term studies found no differences in cancer, obesity, diabetes, kidney disease, gastrointestinal problems, celiac disease, autism, or food allergies.

EFSA says that GMOs authorized for the EU market have undergone risk assessment and that the available evidence has not shown that approved GM foods pose higher health risks than conventional foods.

Regarding human health, the committee found **no substantiated evidence that foods from GE crops were less safe than foods from non-GE crops**. It also reported **no conclusive cause-and-effect evidence of environmental problems from GE crops**, while noting that several GE crops are in development that are designed to **benefit human health**, such as rice with increased beta-carotene content to reduce vitamin A deficiency.

This consensus report conducts a broad review of genetically engineered (GE) crops, including an assessment of evidence for **deleterious effects on human and animal health**. It concludes that, based on available data, **no clear evidence has emerged of health problems in humans caused by consuming foods derived from GE crops**, while also identifying areas where information gaps and uncertainties remain.

Health Canada states: "We do not allow the sale of genetically modified (GM) foods in Canada unless Health Canada's scientists are satisfied that they are safe and nutritious." It concludes: "To date: all of the GM foods we have reviewed are as safe and nutritious as non-GM foods; we have not found any verifiable scientific evidence that shows GM foods are less safe than traditional varieties." The page also notes that using GM techniques "does not introduce unique risks into the food supply" and that potential long-term effects are "no different than for conventional foods."

This review discusses health concerns raised about GM foods, including toxicity, allergenicity, and genetic hazards. It also notes that major scientific and regulatory reviews have generally not found evidence that approved GM foods are harmful to human health.

This review describes the safety assessment framework for GM foods and notes that the main concern is not the mere presence of modified DNA, but whether the introduced trait changes the composition or allergenicity of the food. It states that available evidence supports the safety of approved GM foods.

The review concludes that the main issues for GM food safety are compositional changes, toxicity, and allergenicity, and that there is no evidence that approved GM crops are inherently more risky for human health than conventional crops.

This critical review of animal feeding trials finds that the majority of studies "did not show any biologically relevant differences in the parameters tested" between animals fed GM and non‑GM diets. The authors report that some studies claiming adverse effects had "methodological flaws" such as small sample sizes and inadequate statistical analysis, and that their results could not be reliably interpreted as evidence of harm. Overall, the review concludes that, within the limitations of available data, "no consistent pattern of adverse health effects associated with consumption of approved GM crops" has been demonstrated in animal models.

Summarizing the National Academies report, the ASPB notes as a key conclusion: **"There is no persuasive evidence of adverse health effects directly attributable to consumption of foods derived from GE crops."** It also emphasizes that the report recommends moving away from a simple GE versus non-GE debate and instead evaluating **specific traits and varieties**, while calling for use of -omics technologies to better detect any unintended health effects.

The UConn Extension overview explains that "the scientific consensus remains strong: there is no substantiated evidence that GMO foods are less safe than their non-GMO counterparts." It cites a 2016 report by the U.S. National Academies of Sciences, Engineering, and Medicine which "found no significant differences in health outcomes such as cancer, allergies, or chronic diseases between populations that consume GMO foods and those that do not."

This evidence deck summarizes major institutional reviews: "The National Research Council of the United States conducted a comprehensive review and concluded there is no credible evidence that consuming genetically engineered crops causes adverse health effects in humans." It also notes that the European Commission Joint Research Centre reported that decades of research have built up an adequate body of knowledge addressing food safety concerns related to genetically engineered crops. The deck highlights a 2016 critical review of 1,783 GMO studies, stating that after correcting for statistical errors, "no substantial evidence of harm emerged" and that "the scientific consensus is that the risk profile of genetically modified foods does not exceed that of conventional foods."

Medical News Today reports that "scientists have not yet shown that GMO foods are harmful to health, but research is ongoing." It notes that "currently, there is no evidence that GMO foods cause cancer, allergies, or any other health conditions" and that small fragments of DNA from food can enter the bloodstream, but "there is no evidence that they have any impact on genetic makeup or human health." The article also explains that most DNA in food, GMO or not, is destroyed by cooking or digestion before reaching the large intestine.

This advocacy page argues that genetically engineered foods are inherently unstable and may create health risks through toxicity, allergenicity, and antibiotic resistance markers. It cites concerns that DNA modification could create new toxicants or allergens.

Multiple scientific bodies, including the U.S. National Academies of Sciences (2016 report "Genetically Engineered Crops"), the American Association for the Advancement of Science (2012 statement on GM crops), and the UK Royal Society, have published summaries concluding that **approved genetically modified foods are no more likely to be unsafe than conventionally bred foods**. These consensus statements emphasize that **health risk depends on the specific trait and product, not on the mere fact of DNA modification**, and they note that no mechanism has been demonstrated by which ingested transgenic DNA routinely harms human health under normal dietary exposure.