There was groundbreaking news in the produce world in the fall of 2022. If you missed it, theUSDAapproved the sale of a purple tomato that boasts more nutrients than traditional red ones. On the surface, this may seem like a win-win for health and adding color to dishes. However, bringing these purple fruits to market isn’t without controversy. This is because they were created using genetic engineering, also known as genetic modification—an area of concern among many health-conscious consumers.
Photo: Norfolk Plant Sciences. EatingWell design.
Here’s everything you need to know about purple tomatoes.
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Purple Tomatoes—Why and How?
Tomatoes are a staple food in many people’s daily diets. From salads and sandwiches to ketchup and spaghetti sauce, tomatoes are a key ingredient in many dishes. Moreover, tomatoes providemany health benefitsdue to their amazing nutrients. For instance, according to theUSDA, a medium tomato offers almost 20% Daily Value for vitamin C. Tomatoes are also an excellent source of a disease-fighting compound known as lycopene, per a 2018 article published inFood Chemistry. This leads one to assume that the new purple ones were developed just for looks, but it’s quite the opposite. The researchers' goal when developing them was to create a tomato that was still a good source of existing nutrients plus added the benefit of another group of beneficial compounds known as anthocyanins.
Both lycopene and anthocyanins are considered antioxidants—compounds that can neutralize free radicals and exert anti-inflammatory effects in the body, per theNational Institutes of Health. Both of these antioxidants also happen to be the pigment source for many of your most vibrantly colored produce. For example, anthocyanins give berries their deep purple and reddish-blue color, and lycopene gives a red and pink coloring to foods like tomatoes, papaya and watermelon.
Research suggests that higher intakes ofantioxidant-rich foodsare associated with a lower risk for diseases like heart disease, cancer, dementia and Alzheimer’s. However, anthocyanins exhibit some of the most potent disease-fighting properties, per a 2020 article published inMolecules. This prompted researchers to begin their quest 15 years ago to grow a tomato rich in lycopeneandanthocyanins. They slowly determined that conventional tomatoes have the genetic coding to make higher levels of anthocyanins, but this gene wasn’t “turned on” to do so. After much testing, they determined that inserting two genes from snapdragons into a tomato cell’s DNA could turn this gene on—and so, this new variety of purple tomatoes was born.
Potential Health Benefits of Purple Tomatoes
According to the developers and researchers atNorfolk Plant Sciences, the new purple tomato boasts the same nutrients as a conventional tomato. Plus, it also contains anthocyanin levels comparable to what you’d get in a serving of blueberries. This means the purple tomato could possibly be one of the best sources of antioxidants to exist. The question is, could regularly incorporating these purple antioxidant-rich tomatoes in our diets have a significant influence on reducing and suppressing disease? No long-term data on humans currently exists, but when these tomatoes were incorporated into the diet of cancer-prone mice, their lifespans were significantly increased, per the 2008 study published inNature Biotechnology.
Possible Health Risks
Quick GMO Basics
For instance, in the agricultural world, the intention has been to address issues affecting farmers and sustainability. For example, genetic modification has made crops more pest-resistant, so fewer pesticides and herbicides are used. It’s also enabled crops to be more resistant to weather extremes and can prevent soil erosion, perPurdue University.
What Does Research Say about GMOs?
While the process sounds somewhat Frankenstein-like, GMOs are safe to eat, per theFDA. Plants that have been genetically modified have been in the food supply for approximately 20 to 25 years, and during that time, there haven’t been any health issues reported from eating them. In addition, genetically modified plants undergo much more scrutiny and regulation than any conventional plant in your food supply.
The Bottom Line
Purple tomatoes were developed to have higher anthocyanin levels and provide more health benefits. Federal agencies such as the USDA, FDA and EPA ensure that GMOs are safe for human consumption. So, will purple tomatoes be in your grocery cart? This is something you have to decide for yourself and your family.
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