I think mine started when I was in high schol, almost on a subconscious level. I had a teacher die from stomach cancer in the span of a few months. One week she was there, saying her stimach hurt, the folowing week she was gone to the hospital, and we found out she was sick. Crazy. Then I watched my grandpa die, and he was really sick. Also cancer, also very ugly. I spent a lot of time reading about crazy diseases on wikipedia, and I think that also kind of caught up to me. I also got depressed and diagnosed with anxiety to years ago after a bout of panic attacks. I feel like that manifested itself in the form of hypochondria...and that's where I've been since then...trying to manage, going up and down.