Some take it indefinitely if no other risk factors.
my mum came off it in the 90s after the scare and was absolutely fine, despite really suffering during peri. She’s a sharp as a pin in her 70s and has good bone density. Shes always kept very active though, she was always the one shovelling coal and chopping logs. She reads a lot, keeps a diary etc.
shes also always eaten what we’d now call a gut biome friendly diet. I’ve found that helps. A Zoe study found that diet changes alone reduced meno symptoms in women who were on hrt but still symptomatic by 30%
I think it’s helpful to know hrt is one of many tools in the tool box. When my tamoxifen sweats are bad I do think about asking to try it alongside tam, but I know it’ll have a fight to get it (one oncologist said I could 😳) And I’d maybe consider trying it in the future after 5 years clear - the evidence keeps changing. (I was stage 1 grade 2, no lymph nodes. Liz O riordan would say definitely not though.) but I also know I can live really well with within this current lifestyle without it.
the end of this podcast was really helpful in that regard, she explained the “Hrt is one of many tools” really well: https://podcasts.apple.com/gb/podcast/feel-better-live-more-with-dr-rangan-chatterjee/id1333552422?i=1000726903690
theres some current research looking at women after primary breast cancer and exercise- piggy backing the regime that heart patients get after surgery, prescribed gum visits etc. the reasoning is that it both reduces reoccurrence but also helps the symptoms of menopause which most post bc women do have due to either chemo or the anti hormone drugs they’re on.