“Aging related” just means we don’t know what causes it, and yes we are much better at treating things when we know their cause. For example, right now parkinsons is aging related and we can’t do a thing about it, but there is increasing evidence that it is caused by some pollutant or toxin. If we find the toxin, then parkinsons will stop being age related. Mesothelioma is a historical case of this: for 100 years it was an untreatable aging related disease, it’s now obviously not an aging related disease, and the treatment is don’t breath asbestos.