Pioneering New Technology

Are GMOs Safe?

Non-GMO labels, trending hashtags, confusing articles — there’s a lot of noise out there about GMO safety. Emotions are high, and public opinion is heavily split. In fact, it’s not exactly clear what the public believes.
In a survey of more than 10,000 people across 10 countries, we found that roughly half the population thinks genetically modified foods don’t have any long term health effects and that they can benefit the environment. But at the same time, 72 percent of people avoid buying genetically modified foods, and 62 percent think they should be banned. Why the discrepancy? It’s likely lingering doubts about health risks play a big role.
It certainly makes sense to be cautious. When it comes to your family’s health, you want to be absolutely sure you’re making the best choices. We, of all people, believe it’s important to know where your food comes from. So, when you keep hearing buzz that GMOs aren’t safe, it’s natural to wonder: What are the risks?
We’ll break it down simply here: Over and over again, GMOs have been proven to be safe for humans, animals and the environment. Every major scientific body that has reviewed the safety of genetically modified foods has come to that same conclusion. Let’s talk about what they found.

But First… What Are GMOs Anyway?

GMOs, or genetically modified organisms, is a term commonly used to describe crops produced through a plant breeding technique that uses a specific type of genetic engineering. Essentially, plant breeders take the gene for a specific trait in one plant or microbe and insert it into the cells of a crop plant. And no, not just for fun. The goal is to add “desirable traits” to a crop. “Desirable traits” like what, you ask? Well, like better nutrition; longer shelf life; resistance to pests, diseases and herbicides; faster growth… some pretty good stuff.
illustration for each step in the process
In reality, pretty much all of the foods we eat have been genetically modified. Farmers have been genetically modifying plants for more than 9,000 years. Our ancestors would select and replant the seeds from the best plants, steadily altering the genetic material of crops over time. Later, plant breeders started crossing related plant species to introduce more genetic diversity and make better crops. Today, we’re simply using modern tools and technology to modify crops more efficiently and precisely.

Do GMOs Cause Health Problems?


Let’s go back for a second… to a time when we thought Beanie Babies would make us millionaires and the Macarena was the height of cool. We’re talking the 1990s. That’s when genetically modified crops first hit the market, and since then, not a single food safety or health issue associated with GM crops use has been confirmed. That means all of the bad things you’ve seen about GMOs on Facebook aren’t true — and aren’t supported by two decades of historical evidence or by credible scientists.

Even though a genetically modified crop is virtually identical to a similar non-modified crop, all GMOs nevertheless go through rigorous safety testing at every stage — from research planning to field-testing to food and environment safety assessment — before going on the market.

Experts Weigh In

At, a wide range of experts tackle reader questions about GMOs and other modern farming topics. Here are some highlights from what they’ve said about GMO safety.

How can you be sure that GMO foods won't affect human health long-term?

Answered by Denneal Jamison-McClung, Ph.D., Associate Director, UC Davis Biotechnology Program
“From their introduction in 1996 until now, scientists have found, through repeated and extensive testing, that GM foods are no more risky than comparable non-GM foods, nor do they differ in nutritional value. Currently approved GM crops developed through specific genetic additions or subtractions are as safe as conventional and organic crops developed via random genetic shuffling. Most people do not realize that plant breeders have been randomly altering and admixing plant genomes for centuries.”

Read her full answer here.

Why are GMO companies against labeling GMO foods?

Answered by Cathleen Enright, Former Executive Director of the Council for Biotechnology Information
“These foods are as safe and nutritious as their non-GMO counterparts as determined by recognized authorities around the world including the American Medical Association, the U.S. National Academy of Science, the World Health Organization and the UN Food and Agriculture Organization. Their safety has also been affirmed globally by food safety regulatory authorities including in the European Union, which comes as a surprise to some who mistakenly believe that GMOs are banned by the European Union. Why then, should GM foods deserve a special label?”

Read her full answer here.

What are the effects of GMOs on the human body? Has GMO foods led to an increase in the development of allergies among certain groups of people?

Answered by Connie Diekman, MEd, RD, LD, FADA
“The Food and Drug Administration has set forth guidelines related to the use of GMOs, and in those documents they reference the science that indicates food developed through biotechnology are digested in the same manner as other foods and therefore provide the same nutrition, or in some cases more nutrition (if the goal of the biotechnology was to enhance nutrient content). The science also indicates that these foods are safe for consumption and that they are not contributors to increased allergies.”

Read her full answer here.

Do GMOs affect pregnant women or their babies?

Answered by Robert Murray, MD, Professor of Human Nutrition at Ohio State University
“Based on long-term and multi-generational (two to five generations) studies in animals, there has been no additional risk shown to mother, fetus, or pregnancy outcome from GM dietary exposure. Since 1983, GM crops have been introduced into the food supply, including corn, cotton, soybeans, canola, potatoes, eggplants, strawberries, apples, papaya, tomatoes, lettuce, carrots, cantaloupe, and even one animal species, a type of salmon. To date, there has not been evidence shown of human health risks tied to GM food exposure.”

Read her full answer here.

GMOs are actually one of the world’s most researched agriculture products and have been deemed safe by virtually every major independent institute. To name a few: UN Food and Agriculture Organization (FAO), the World Health Organization (WHO), the European Food Safety Authority (EFSA) and the U.S. National Academies of Science. As a matter of fact, the U.S. National Academies of Science reviewed more than 900 studies over 20 years and determined that genetically modified crops are safe to eat and have not caused increases in cancer, obesity, gastrointestinal illnesses, kidney disease, autism or allergies.

All in all, GMOs are safe. Scientists says so. And now you’re armed with the science yourself the next time an alarming Facebook meme pops up!

Current Readers´ rating (18)
All Comments

January 13, 2020 - 04:08 PM

If GMOs are safe tell me how a person in my family is highly allergic to GMOs. I don’t believe you should say it’s safe until you’ve met people who spend $100 just for three item in the grocery story, people who have to miss out on all the new foods coming into the world.

Current Readers´ rating (17)

January 09, 2020 - 06:06 PM

Has there ever been a moment in time when genetically modified crops was not proven safe for humans?

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Farm Meets Table Team
January 10, 2020 - 07:08 PM

Thank you for your question, Gen. No, there has not been a time when GMOs were shown to be unsafe. Through the years, multiple studies have shown that GMOs are safe for humans, animals and the environment.

Current Readers´ rating (3)

pp overlord
December 17, 2019 - 08:52 PM

gmos are harmful. to humans, to plant life, to organisms.
BTS paved the way

Current Readers´ rating (17)

Sharon Lance
November 12, 2019 - 10:51 PM

You and these organizations and and scientist are wrong. You are not being honest with the public.

Current Readers´ rating (25)

November 11, 2019 - 11:48 AM

Nothing unnatural can supersede something natural when it comes to our fruits and vegetables. Simple fact by nature.

Current Readers´ rating (15)

October 16, 2019 - 10:28 PM

I'm not sure the sources "farm meets table" are 100 percent credible. The government and other government funded agencies have a vested interest in controlling the food supply. There is a reason other countries are banning GMO crops.

Current Readers´ rating (18)

October 25, 2019 - 12:02 AM

The biggest problem with GMOs is the fact that too many people lack knowledge on what it is and then fear it because of that lack of knowledge.

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Farm Meets Table Team
October 24, 2019 - 08:40 PM

Thank you for your comment, Lisbeth. On Farm Meets Table, we reference a variety of reliable sources from around the globe, and we consider many different viewpoints. Looking across studies, you'll find broad scientific consensus on the safety of GMOs. In the more than 20 years GMOs have been on the market, scientists have consistently found that GMOs are no more risky than comparable non-GMO foods.

If you'd like to learn more, there is a wealth of scientific research available online. Here's a great place to start: The National Academies of Science brought together the best experts from a variety of different fields to take a detailed look at all the science surrounding GMOs. They published their full report here:

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Sergio Andres Jr
November 01, 2019 - 01:28 AM

There are many ways to genetically modify a plant or animal. Some are harmful and some are not. Never get the conclusion that all GMO products are safe. It is better for producers to mention what kind or methods were used to genetically modify plant or animal. We are not looking at a 5 year effects but 30 years effects of GMO's. Carcinogenesis take 5 to 30 years to grow and develop after exposure or continues exposure to a substance or a food product.

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Steven Prentice
October 07, 2019 - 12:27 PM

Firstly Gmo's are not safe, they are banned in mamy countries because of there destructive ways in nature. Its unnatural and they do not provide the vitamins and minerals needed that normal produce provides. Gmo wheat is causing serious issues, eg gluten is a big problem now, where as 30 years ago it was not because of the chemicals and gmo's on the scene.

These companies can do as they wish, but they need to put to a public vote and label everything. Gmo or non gmo.

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Farm Meets Table Team
October 09, 2019 - 01:48 PM

Thank you for your comment, Steven. Genetically modified foods contain all the same nutrients as foods from conventional crops. Scientists modify crops to add new beneficial traits while preserving existing desirable traits. At this time, there is no commercial GM wheat crop available anywhere in the world. Any future GM wheat crop will be required to go through extensive safety testing before it makes it to market. This includes checking more than 1,950 genes to see if there is any match between the added trait and a known allergen. Researchers will then conduct rigorous research to ensure the new crop will not cause allergies. You can find more information here: .

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August 29, 2019 - 03:14 PM

“To date, there has not been evidence shown of human health risks tied to GM food exposure.” - I guess we just have to wait and see, just like we did with lead, with asbestos, with tobacco, and other things. These things develop over years and if 62 percent of people think they should be banned is because they have seen the effects in their lives and others that they know.

Current Readers´ rating (21)

Farm Meets Table Team
August 30, 2019 - 12:43 PM

Thank you for your comment, Ed. A key distinction is that we have been modifying the genetic makeup of food for centuries. Today, we just have more precise tools for making these changes. In fact, GM foods are actually studied far more extensively than new crop through traditional methods like cross breeding. This report from the National Academies of Science provides a detailed look at the science of GMOs:

Current Readers´ rating (10)

August 27, 2019 - 01:45 PM

As of now, there is still not enough evidence to show that GMO is harmful, or safe. There has in fact been very little research into the dangers of GMO. but if you look at it logically, it is quite evident that consuming pesticides and herbicides are harmful to humans even if it is not evident immediately. Whos to say that the long term causes won't affect the children who grew up eating GMO products when they reach a certain age? it has not been around for long enough to say, so to tell people that it's safe could possibly be condemning them to serious health issues in later life.

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Farm Meets Table Team
August 30, 2019 - 12:35 PM

Thank you for your comment, Rosie. We appreciate your concern about food safety and hope you know that as consumers ourselves, we share the desire to make sure the food we eat is as safe as it can possibly be.

Hopefully it will make you feel a little better to know that GM foods are actually studied far more extensively than if you created a new variety of a fruit or vegetable through traditional methods like cross breeding. Every new GM trait is studied for many years by government regulators around the world to ensure that it is as safe as its conventional counterpart — for humans and the environment.

Genetically modified foods have already been on the market for more than 20 years (since 1996). In that time, scientists have found, through repeated and extensive testing, that genetically modified foods are no more risky than comparable non-GMO foods.

Don't just take our word for it though! You can find a ton of resources on-line if you are interested in learning more about the safety of GM foods and how they are tested. For example, the National Academies of Science brought together the best experts from a variety of different fields to take a detailed look at all the science surrounding GMOs - their full report can be found here:

A few other places where you can learn more about safety tests for GM foods are:

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July 28, 2019 - 01:04 PM

If GMO foods were found to be toxic, would the results be published? The tobacco industry told us for so many years that tobacco was safe! How are we supposed to trust scientists when not all information is disclosed?

Current Readers´ rating (10)

Farm Meets Table Team
August 08, 2019 - 08:59 PM

Thank you for your question, Jo. There are extensive processes and standards in place to ensure transparency in GMO safety research.

GMOs and other agricultural technologies go through a long period of testing before they ever make it to market. In fact, GMOs are among the most tested foods you can buy. Any adverse outcomes found during safety testing must be reported to regulators. It’s illegal to withhold this information. And if a product in development is found to be toxic, it never makes it to market.

All food in the supermarket is regulated to ensure that it is safe for us to consume, and surveillance continues after a product is released. Regulatory agencies such as the USDA have their own research arm and publish their findings. Government agencies also fund academic scientists, who are completely independent of industry.

Agriculture industry scientists do publish peer-reviewed papers as well, including research into GMO safety. However, some industry findings may not be published unless there is some significant incremental advance in knowledge that can be contributed to the scientific community. This is not an effort to hide safety information — it’s a function of the different roles of industry and academic scientists. While an academic scientists primary role is to perform research and publish results, an industry scientist’s role is to find solutions that are safe and effective. Industry scientists may have to delay publishing in order to protect intellectual property before patents are issued.

Finally, remember industry scientists buy food at the grocery store just like everyone else. And just like everyone else, they want a safe and sustainable food supply. Their families eat the food they helped develop — and that’s the ultimate incentive to make safety their top priority.

Here’s some more information:

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