I lost a job for announcing I had Crohns.
I interviewed for the airlines, went through all the managers, they absolutely loved me and days letter I got an offer letter contingent in passing a physical ( I was a programmer so I was not worried about the physical). Talked to my future boss, asked whether I should resign, he said yes, I then resigned from Job 1 giving two weeks notice.
I go for the physical and it was a two story building that had a 5 hour physical process, even Xrays and blood work.
I was on Prednisone and was worried that they will discover it on my blood, so on a another questionnaire I reported I had Crohns...That was the end of further physicals, they withdrew their offer by not passing the physical (all airlines employees were going through the same physical). Their reason was that my job may require "stress".
So now I had to go back to Job 1 begging for my old job back and I got it.
Irony: the Prednisone was not been tested in the blood work so if I would not have disclosed the Crohns they would have never known.
Now, 30 years later I could tell you that I will not take a job that upset me or stressed me out, but will not admit I had Crohns.