While I was going through chemo a 'friend' of mine actually said to me that I was the perfect example of what women shouldn't do and it was no wonder I got breast cancer at aged 47. After being a sports mad super fit teen and young adult, I became obese. I had an atrocious diet and there was a definite period of time in my life when I probably had too many wines a week. It wasn't something particularly helpful for a friend to say, but not for one minute did I really believe that it was the absolute reason for my diagnosis.
My husband's step mother was 43 when she was diagnosed with the same type HER2+ grade 3 breast cancer as I had. She was a triathlete, was super healthy and she still got it. Unfortunately she died at 48, which is the same age as I am now. Even though she had bumped her healthy eating and exercise into overdrive after her initial diagnosis she still got a recurrence which spread.
I have now lost 30 kgs since treatment ended. To be honest I didn't do that to prevent recurrence, I did it because my arthritis and joint pain were affecting my quality of life. I am no longer worrying all that much about recurrence because secretly deep down I think I will get it again. This is not pessimistic thinking, rather a view based on the overall risk relevant to my particular circumstances. Obviously I am hoping that if it does recur it will be in 15 years rather than 2 years, but my new normal is certainly leaning towards living life today rather than waiting for tomorrow. I must admit it wasn't easy to get to this headspace, my husband and I had lots of discussions about priorities, but at the moment, that's where I am at and it's kind of liberating.
Although, now that I think about it, maybe @primek Kath is on to something. After all I did get my first white hair at 42....... ;)