Can You Eat Mayo While Pregnant?

Is mayonnaise safe during pregnancy?

Yes, commercial pasteurized mayonnaise is safe during pregnancy. Mayonnaise is an emulsion of oil, egg yolks, and acid (vinegar or lemon juice), seasoned with salt and sometimes mustard or other ingredients. Commercial mayonnaise sold in US grocery stores (Hellmann's, Best Foods, Kraft, Duke's, Miracle Whip, Trader Joe's, Whole Foods 365, and major store brands) is universally made with pasteurized eggs (typically pasteurized liquid egg yolks). The pasteurization process heats eggs to specific temperatures that destroy Salmonella while leaving the eggs functional for emulsification. The FDA mandates pasteurization of liquid egg products for commercial use. Mayonnaise's acidity (from vinegar or lemon juice) also inhibits bacterial growth. Commercial mayo lasts months refrigerated after opening and remains safe.

What mayonnaise should you avoid during pregnancy?

Avoid: homemade mayonnaise made with raw eggs from shell eggs (Salmonella risk); restaurant mayo made with raw eggs (less common but possible at fine dining establishments making house mayo); some artisanal or specialty mayos that don't use pasteurized eggs (check labels); homemade Caesar dressing, hollandaise, and other emulsions made with raw eggs (these aren't mayonnaise specifically but similar concerns). Most restaurant chains use commercial mayonnaise; fine dining restaurants may make house mayo from raw eggs. If uncertain at restaurants, ask: 'Is your mayonnaise commercial or made fresh with raw eggs?' Raw egg mayonnaise in homemade preparations: traditional French aioli (often made with raw eggs); some pasta salads with homemade dressing; some homemade Russian dressing or thousand island. For these recipes, substitute commercial mayonnaise or pasteurized egg products.

What's the Salmonella risk with raw eggs in mayo during pregnancy?

Raw eggs can carry Salmonella enterica, the most common cause of foodborne illness in the US. The FDA estimates about 1 in 20,000 eggs may be contaminated. Salmonella infection causes severe gastroenteritis with diarrhea, fever, abdominal cramps, and vomiting. During pregnancy, Salmonella poses additional concerns: dehydration from vomiting and diarrhea (dangerous in pregnancy); fever can affect fetal development; severe cases (about 5 percent) can cause bloodstream infection (bacteremia) and rarely meningitis or arthritis; very rarely, Salmonella can cause miscarriage or stillbirth, though this is much rarer than Listeria-related fetal harm. The risk from any single egg is small, but raw eggs in homemade mayo are unnecessary risk when pasteurized alternatives are equally functional. Pasteurized liquid eggs (sold in cartons like Davidson's Safest Choice) can substitute for raw eggs in homemade mayo with safety.

How can you use mayo safely during pregnancy?

All common mayo applications are safe with commercial pasteurized mayo: sandwiches (turkey, ham, tuna, BLT) - though heat the meat to 165°F first per Listeria precautions; mayonnaise-based salads (tuna salad, chicken salad, egg salad, potato salad, macaroni salad); dressings and dips (ranch, Russian, thousand island, tartar sauce, remoulade, aioli when commercial); deviled eggs (cooked eggs with mayo); crab cakes; coleslaw; pasta salads. For homemade mayo lovers, use pasteurized egg products (Davidson's Safest Choice in shells, or Egg Beaters/All Whites in cartons) to make safe homemade mayo with the texture and flavor you prefer. At restaurants, sandwich shops typically use commercial mayo (Subway, Jersey Mike's, Jimmy John's all use commercial).