I replying to my own thread as it’s a bit out context. I do think there’s a correlation with environmental factors for many types of cancers.

Thank you! Since hormone positive breast cancer is about 70-80 % and divorce rates are 50%, both are quite common. But I can't see how one causes the other. I'm very happily happy married (to my high school sweetie after many intervening decades) and I have hormone positive breast cancer. Certainly either of these problems can make other problems feel worse, though! I don't know what caused my breast cancer, but I will take some credit for the optimism to fall in love again after I was widowed at 41--and maybe the good sense to choose a guy I already trusted and was compatible with.