Hey there fellow Bostonian.
(Well, I live a bit out of Boston but still.)
I'm so sorry for your loss. I lost my father at a very young age, also to a very quick (5 months, 1 week, 1 day from diagnosis to funeral) battle with cancer. Food was always a comfort to me, even then.
I've also struggled with my weight my whole life. The lowest I've been my whole adult life is about 250. I'm 27 now.
That's absolutely amazing that you were running marathons. I've always admired people who can get themselves in shape enough for that kind of distance running.
Nice to have you aboard, hope to see you around!
Feel free to PM me if you'd ever like to chat.
If you happen to have a myfitnesspal my name there is kds61888 feel free to add me.