Frequently Asked Questions
Can blue cheese cause miscarriage?
Listeria infection from contaminated blue cheese can cause miscarriage โ the CDC estimates listeriosis in pregnancy results in miscarriage in approximately 20% of cases and stillbirth in a further 8%. This is why the CDC and ACOG specifically list blue-veined cheeses on the avoidance list unless pasteurized. The risk is real but proportional to actual contamination of the specific cheese, which is why pasteurization status matters so much.
Is blue cheese dressing safe during pregnancy?
Bottled blue cheese dressing from major brands (Hidden Valley, Ken's, Kraft) is generally safe โ it uses pasteurized cheese and has preservatives that inhibit Listeria growth. Fresh-made blue cheese dressing from a restaurant is less certain; ask what cheese was used. The safest approach at a restaurant is to request ranch or Caesar (anchovies aside) instead.
What other soft cheeses should I avoid during pregnancy?
The CDC's avoid list includes: Brie, Camembert, feta (unless pasteurized), queso fresco, queso blanco, panela, and all blue-veined cheeses unless pasteurized. In practice, feta and queso fresco sold in US supermarkets are frequently pasteurized โ check labels. Brie and Camembert are more consistently made with raw milk and are higher risk.
I ate blue cheese before I knew I was pregnant. What should I do?
One-time exposures to blue cheese are unlikely to cause listeriosis. If you ate blue cheese without knowing you were pregnant and subsequently feel fine, the risk from that single exposure is low. Monitor for Listeria symptoms (fever, muscle aches, nausea) in the 1โ4 week window after exposure. If you develop symptoms, contact your OB-GYN immediately and mention the potential exposure.
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Medical Disclaimer: This article is for informational purposes only. Consult your OB-GYN or midwife for dietary guidance specific to your pregnancy. If you've had a potential Listeria exposure, contact your healthcare provider promptly.
Last updated: June 2026