Re: SPOILER *all five books* THREAD FOR Game of Thrones (TV series discussion)
I don't know...does the runs count as a disease? Maybe the theory applies to major diseases like grayscale?
IIRC though, the runs was a symptom of that disease that was running through mereen. she paid a visit to all the sick people and a couple chapters later she's got the runs. could be from the berries or water though too.