@PlanDeRaccordement One final try in the hope you might be a little more open to the other opinions of experts out there!
I don't need to read the BMJ report. I read it the day it came out.
I have already pointed out why other medical experts don't agree with it.
I have tried (and failed :)) to point you in the direction of other experts who point to the limitations of that data.
I can only reiterate that all those studies are indeed a meta analysis which includes both robust AND non-robust data. So they are not all double-blind controlled trials using the same HRT.
It has LONG been known than the progesterone element of HRT is the implicating hormone in HRT. The recent BMJ report says nothing new.
However, it is the only report yet to show that estrogen-only hrt increases BC risk. And there are many experts who refute the data and how they are interpreted.
Have you listened to the podcast with Michael Baum?
I really suggest you do before you post again because he is an expert and I am quoting him and others.
You might also like to look at the book Estrogen Matters by Avron Bluming who is a US cancer expert who disputes any link between HRT and cancer.
IF there is a connection between estrogen and cancer, it is minute and less than 1% per woman. Listen to the Michael Baum podcast 'double a tiny number is still a tiny number'.
And the research appears to show estrogen may fuel an existing cancer not cause it.
As another poster has said, smoking, being overweight, drinking 2 units a day and being sedentary all carry a MUCH higher risk of BC than the very worst case scenario of HRT.