So obviously, by Enterprise's time, things like cancer and heart disease and every other currently known forms of horrible diseases and conditions have been cured.
But do you think that new lethal diseases and conditions came along on earth that couldn't be cured, even in TNG's time with the advanced medicine and technology they had by then? Things that would be known as the "cancer" of the future, even though it wouldn't actually be cancer.
I know that in All Good Things, in that alternate future that never happened, Picard had Irumodic Syndrome and that there was no known cure for it at the time. Was that supposed to be the "cancer" of the 23rd century? Or were there even worse diseases that perhaps had come from space that had afflicted 23rd century humans that couldn't be cured?
But do you think that new lethal diseases and conditions came along on earth that couldn't be cured, even in TNG's time with the advanced medicine and technology they had by then? Things that would be known as the "cancer" of the future, even though it wouldn't actually be cancer.
I know that in All Good Things, in that alternate future that never happened, Picard had Irumodic Syndrome and that there was no known cure for it at the time. Was that supposed to be the "cancer" of the 23rd century? Or were there even worse diseases that perhaps had come from space that had afflicted 23rd century humans that couldn't be cured?
And I recall reading the same about cancer as well. with Trek, it's an agreeable mindset to believe cancer can be properly and concretely prevented... which might have to be the case. They're in space and as there's cosmic radiation flowing through everything, albeit at sublight speeds or when geostationary, et al (can a ship at warp go through the radiation faster or are the radiation particles shoved to the side like kites during a tornado - which isn't a great analogy because outer space has no gravity and so on...) 
