So I would advise anyone to include a doctor's letter if they want to get out of jury duty.
After nearly eight years with UC, six of them in flare, I no longer hesitate to use the magic words in public:
Whatever someone is trying to get you to do, eat, or try is immediately forgotten. Judges hate being told there's no way I can wait for them to call a recess, when I have to go, I just have to go now - and I still may not make it.
Now that I'm in remission, I just insert "may", because there's nothing to guarantee I won't be back in a flare at any particular time.