The Worst Processed Lunch Meat To Avoid At All Costs That WHO Classified As A ‘Carcinogen’: ‘Same Group As Tobacco’
January 17, 2026 by Faith Geiger
Protein is an important component of any balanced diet—but choosing the right type of protein is crucial. If deli meat is a go-to option for you, it may be time to reconsider your staples. According to the World Health Organization (WHO), processed lunch meats like ham and other cold cuts have been classified as Group 1 carcinogens, meaning there’s strong scientific evidence they can contribute to cancer in humans. To put that in perspective, this classification also includes substances like tobacco, asbestos, and arsenic. Yikes!
“This category is about certainty of evidence, not how dangerous something is,” explains Darshan Shah, MD (@drshahlongevity). He stresses that “It doesn’t mean one sandwich will cause cancer. Risk depends on how often and how much you eat. Awareness allows better choices.” In other words, while enjoying deli meat occasionally is unlikely to be harmful, making it a daily habit can definitely cause long-term consequences for your health.
“Consuming about 50 g of processed meat per day (roughly two slices of deli ham) is associated with a significant increase in colorectal cancer risk. More recent research also links processed meat preservatives to higher risks of breast and prostate cancer,” Dr. Shah warns.
Experts point to a combination of factors that make deli meats particularly risky. For starters, Dr. Shah says, “Nitrates and nitrites used for preservation can form nitrosamines, compounds known to damage DNA and the colon lining.”
Additionally, “Many deli meats are also ultra-processed, made from reconstituted meat pastes with additives like carrageenan, maltodextrin, and corn-syrup solids.”
But it isn’t just cancer risk you’re increasing when you chow down on sliced ham. “Even small daily amounts were associated with higher rates of type 2 diabetes and ischemic heart disease,” Dr. Shah writes.
On top of this, “Deli ham is often extremely high in sodium and saturated fat, which can contribute to high blood pressure, elevated LDL cholesterol, and increased stroke risk.” Yikes! That’s a lot of risks at once.