As we celebrate another anniversary of Medicare and Medicaid this month, I’m reminded how quickly life can change — and how important these programs are for people facing unexpected health challenges.For years, I traveled the world as a federal regulatory affairs professional, conducting inspections of clinical research trials and pharmaceutical facilities. I loved my work, the people I met and the sense of purpose it gave me.Then I was diagnosed with multiple sclerosis.As my condition progressed, I could no longer travel and eventually had to retire on disability. Losing my career meant losing much of the independence I had worked...