Strongly YES. In Portugal where I live, the knowledge of this particular kind of cancer isn't spread enough... although we have good doctors and a "medium" level of skill but no care after. I mean that I had to recover my inferior teeth device buying them for an expensive amounth, 2 years insisting and lots of appointments, I had to make my treatment at home and alone (trying to read loud to enable the construction of sounds and phrases, with lots of creams to care for my face skin and marks, make my own food... and so on). You may understand my truggle, very much on my own. Your battle is you so different against normal life, normal people, a job where I have to talk and have interaction with customers. I felt miserable.
I'm convinced that the stress I have felt, working a lot, so many hours, be ashamed of my defficient aspect, people just didn't care... made the difference.
A continuous negative state of mind has a lot to do with cancer and the revolt of cells. I think that, from my experience.
My life is limited, my dreams ended. But I am alive. That's that.
May my words be a signal for you and others.