Can you eat unpasteurized cheddar while pregnant?
Check firstUnpasteurized cheddar is fine if it is a genuinely hard, aged block. The NHS clears hard cheeses such as cheddar even when they are made with raw milk, because the low moisture leaves Listeria little room to grow, while US agencies take a stricter line and advise pasteurized dairy only.
Why
Listeria monocytogenes needs moisture to multiply, and aged cheddar is dense, salty, and acidic, which is why the NHS lists hard cheeses including cheddar as safe in pregnancy even if the milk was unpasteurized. The CDC is more cautious and tells pregnant people to choose pasteurized dairy across the board, since raw milk is the original source of the bacteria. Both positions are defensible, so the practical rule is this: a firm aged block of cheddar made with raw milk carries a low risk, and if you want zero room for doubt, the pasteurized version of the same cheese sits right next to it on the shelf. Soft, fresh, or crumbly young cheddar-style cheeses do not get the same pass.
Safer alternatives
- Pasteurized block cheddar such as Cabot, Tillamook, or Kerrygold
- Aged gouda or Comte made with pasteurized milk
- Pasteurized Swiss or Gruyere
- Raw milk cheddar melted until bubbling in a grilled cheese or on a baked potato
Sources
- NHS https://www.nhs.uk/pregnancy/keeping-well/foods-to-avoid/
- CDC https://www.cdc.gov/listeria/prevention/index.html
Every verdict follows our sourcing methodology: official health guidelines only, most cautious position when they differ.
Last reviewed by the pregAI editorial team.
Frequently asked questions
Why does the NHS say raw milk cheddar is fine when the CDC says no raw milk?
They are answering slightly different questions. The NHS looks at the finished cheese and notes that hard, low-moisture cheeses do not support Listeria growth well, so it clears cheddar, parmesan, and stilton. The CDC gives one simple rule covering all raw milk products, which is easier to follow but sweeps in cheeses that pose very little risk.
Does melting raw milk cheddar make it safer?
Yes. Heating it until it is bubbling and steaming hot kills Listeria, so a grilled cheese, a cheese sauce, or a cheddar-topped casserole removes the question entirely. This is the easy move if a raw milk cheddar is the only one in the fridge.
What about cheddar from a cheese counter with no label?
Ask whether it is pasteurized and whether it is aged, since the staff usually know both. If nobody can tell you and the cheese is soft or crumbly rather than firm, leave it. A labeled pasteurized block is the simpler choice.
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