Many diabetics have no doubt suffered covert discrimination in seeking employment or in interpersonal relationships, but I wonder if anyone has been openly discriminated against on the basis of their health status?
When I sought immigration from home country, the United States, to Canada after marrying my wife, who is Canadian, I was declared inadmissible because, according to Immigration and Naturalization Canada, I would put too much of a strain on the public healthcare system because of my diabetes. I found this odd, since Canada is quite proud of its Charter, which explicitly declares discrimination against people because of health status is impermissible. But Canada is not really sincere about its rights, since the courts allow the government almost always to slip out of strict rights observance through the rights limitation clause of the Charter.
I had to spend 22 years living officially apart from my wife, who did not want to leave her job, friends, and relatively, though we visited often. Finally one Canadian government noticed how inhumane the policy of excluding immediate family members from joining their relatives on health grounds, so they decided to allow them into the country. More distant relatives and all ordinary immigrants, however, continue to be excluded.