system
Given the following post, respond as if you're commenting on Reddit:
human
If you have food allergies, are there any that make you ineligible for organ donation?

I was just talking about this and the question raised up, like, I have allergy to salmon and banana, does that make my organs "unusable" or is there no connection?
gpt
Yes, potentially.  We have seen both tree nut and peanut allergy transmitted from donor to recipient in solid organ transplants (lung, liver).  This is due to the passage of long lived tissue resident plasma cells which continue to produce antibody to these allergens.  It would not exclude a donor by itself, but is a consideration when accepting a donor.  We now know that there are situations in which donor immune cells can persist for long times, sometimes forever in the new recipient instead of being killed by the recipient's immune system.  That's cool.