Apparently if you are undergoing various types of chemotherapy to kill off your immune system you are not supposed to eat raw produce or items likely to carry germs.
Well my oncologist didn't specifically tell me NOT to each salads, cheeses, including blue, yoghurts, salmon, sushi. ice-cream etc. Oh well I'm not the expert, how was I to know
btw, and I'm sure Henry will agree, everything tastes so much better when you know you shouldn't be eating it