Cooked deli meat is safe during pregnancy, but only if you heat it to an internal temperature of 165°F (steaming hot) right before eating it. Eating cold deli meat straight from the package or counter carries a real risk of Listeria infection, a bacteria that is especially dangerous during pregnancy. Both the CDC and the American College of Obstetricians and Gynecologists give the same advice: either avoid deli meat entirely or reheat it until it’s steaming.
Why Deli Meat Is a Problem During Pregnancy
The concern isn’t about deli meat in general. It’s specifically about a bacterium called Listeria that thrives in refrigerated, ready-to-eat foods. Unlike most foodborne bacteria, Listeria grows at refrigerator temperatures. Your fridge slows it down but does not kill it, which means a sealed package of turkey or ham sitting at 37°F can still harbor growing colonies of the bacteria.
Deli meats pick up Listeria in two main ways. First, even though the meat is cooked during manufacturing, it can become contaminated afterward by touching surfaces in the production facility. Second, deli counters are a hotspot. Listeria spreads easily among slicers, countertops, hands, and other foods. So even a “clean” brand of roast beef can become contaminated the moment it’s sliced at the deli counter.
What Listeria Can Do During Pregnancy
For most healthy adults, Listeria causes a few days of digestive misery and resolves on its own. During pregnancy, the stakes are dramatically higher. Pregnant women are roughly 10 times more likely to develop the serious, invasive form of infection called listeriosis.
A national cohort study published in the Journal of Maternal-Fetal & Neonatal Medicine found that pregnancies complicated by Listeria infection had a preterm birth rate of 61%, compared to about 8% in unaffected pregnancies. Stillbirth occurred in 13.5% of Listeria-affected deliveries versus 0.7% otherwise. Infection in the first trimester carries an estimated 65% risk of miscarriage, while infection in the second or third trimester carries roughly a 26% risk of fetal death. In the most severe cases, the baby can develop meningitis or sepsis after birth.
These numbers reflect women who were hospitalized with confirmed infections, not the average outcome of accidentally eating a cold sandwich. The overall risk of getting listeriosis from any single serving of deli meat is very low. But the consequences if it does happen are severe enough that the medical community treats it as a risk worth avoiding.
Symptoms Are Easy to Miss
One reason listeriosis is so dangerous in pregnancy is that it’s hard to catch early. The incubation period for pregnancy-related cases is unusually long, with a median of about 27 days and a range stretching from 17 to 67 days. That means you could eat contaminated meat today and not feel sick for a month.
When symptoms do appear, they often look like the flu: fever, muscle aches, fatigue, and sometimes nausea or diarrhea. During pregnancy, those symptoms overlap with things many women already experience, making it easy to brush off. If you develop an unexplained fever after eating deli meat, especially one that persists or comes with body aches, it’s worth getting a blood test to check for Listeria.
How to Reheat Deli Meat Safely
Heating deli meat to 165°F kills Listeria reliably. You can do this on the stovetop, in a skillet, in the oven, or in the microwave. If you use a microwave, be aware that it heats unevenly, so check the temperature in multiple spots or let the meat rest briefly to allow heat to distribute.
The USDA makes one important point that’s easy to overlook: the meat needs to be eaten soon after heating. You cannot reheat deli meat, let it cool, refrigerate it, and eat it cold later. Once it cools back down, Listeria can begin growing again. The safety comes from eating it hot, not from having heated it at some point in the past.
A few practical ways to work this into meals:
- Hot sandwiches: Toast your sub or panini until the meat is visibly steaming.
- Skillet method: Heat slices in a pan for a minute or two per side until they sizzle.
- Stirred into cooked dishes: Adding deli meat to pasta, scrambled eggs, or soup works well since the cooking temperature easily exceeds 165°F.
Storage Limits for Opened Packages
Even if you plan to reheat, how long the meat has been sitting in your fridge matters. The FDA recommends using opened packages of luncheon meat within 3 to 5 days. For hot dogs, the window is about one week after opening. The longer deli meat sits refrigerated, the more time Listeria has to multiply, and a higher starting count of bacteria means a greater risk even after reheating. If you can’t remember when you opened the package, throw it out.
Counter-Sliced vs. Pre-Packaged Meat
Meat sliced fresh at a deli counter generally carries more risk than pre-packaged options sealed at the factory. Deli slicers, cutting boards, and the hands of workers all provide opportunities for cross-contamination. A factory-sealed package has been in a controlled environment since cooking, while deli-counter meat has been exposed to shared equipment that may have touched dozens of other products.
This doesn’t make pre-packaged meat risk-free. Contamination can still happen at the manufacturing facility after cooking. But if you’re choosing between the two, sealed packages that you open at home and reheat immediately carry a lower baseline risk.
What About Nitrates in Processed Meat?
Some pregnant women worry less about bacteria and more about the preservatives in deli meat, particularly sodium nitrite, which is used to cure and preserve most cold cuts. Animal studies have found that nitrates and nitrites can cross the placenta and reach the fetus, and at high doses in animal models, they’ve been linked to increased rates of abortion. However, the amounts used in cured meats are relatively small. The bigger dietary sources of nitrates for most people are actually vegetables like spinach and beets, along with drinking water in certain regions.
The preservative concern is real but secondary to the Listeria issue during pregnancy. If you want to limit both risks, eating freshly cooked chicken, turkey, or roast beef that you prepare at home gives you the protein without either the bacterial exposure or the added nitrites.
Lower-Risk Alternatives
If reheating deli meat every time sounds like a hassle, there are simpler options. Freshly cooked meat that you roast or grill yourself and slice for sandwiches has never been through the deli-counter supply chain, so the Listeria risk drops significantly. Canned meat and shelf-stable pouches (like canned chicken or tuna) are commercially sterilized during processing and are safe to eat without reheating, as long as you use them promptly after opening.
For the times when you do want a classic deli sandwich, just make sure the meat is hot when it hits your mouth. That single step eliminates the bacterial risk that makes cold deli meat one of the few foods the medical community consistently flags during pregnancy.