Founder & Medical Director at New York Cosmetic Skin & Laser Surgery Center
Answered 2 months ago
I am a board certified dermatologist and Mohs surgeon in New York, and I treat skin cancers every week, so I take carcinogen exposure seriously. I am not a medical oncologist, but the message oncologists often give is simple. Dark, overcrisped starches are where risk signals live. Higher heat and longer cook times drive acrylamide formation during browning, which is why "golden" beats "charred" for potatoes and bread. For the microwave story, heat plus plastic is the bigger red flag. A large meta analysis pooling 237 observations found microplastic release from common food plastics rises sharply with temperature, ranging from hundreds to over eight million particles. In practice, I tell patients to transfer food to glass or ceramic before heating, and to toss scratched containers. That advice is easy to follow, and it cuts exposure fast.
Overcooking foods in an air fryer, particularly to the point of excessive browning or charring, can increase the formation of acrylamide, a compound linked to higher cancer risk in animal studies. While occasional consumption is unlikely to cause harm, consistently overcrisping starchy foods like potatoes may elevate long term risk. The safest approach is to follow recommended cooking temperatures and avoid letting foods become overly dark or burnt. Microwaving food in plastic containers not labeled as microwave safe can release harmful chemicals such as BPA or phthalates into your food. Some of these compounds are endocrine disruptors and have been associated with increased cancer risk in laboratory studies. Using glass or ceramic containers and avoiding plastic wrap that contacts food while heating are practical ways to minimize exposure and protect long term health.
To engage oncologists on the risks of food preparation related to cancer, focus on their expertise in high-temperature cooking methods, particularly air frying. Overcrisping food can create harmful compounds like acrylamide, linked to cancer in animal studies. Outreach efforts should include soliciting their insights on how cooking temperature and time affect carcinogen formation, tailoring discussions to their scientific interests.