www.menopausedoctor.co.uk/menopause/052-the-benefits-of-body-identical-progesterone-professor-james-simon-dr-louise-newson
This is a Prof who knows women's hormones inside out and the effects of loss of estrogen, HRT, risks etc.
It is REALLY worth listening to because it sets straight a lot of the questions that come up on here time after time.
(It says it's about micronised progesterone but is about so much more- the history of HRT, the mistakes in the research, risks etc.)
www.menopausedoctor.co.uk/menopause/052-the-benefits-of-body-identical-progesterone-professor-james-simon-dr-louise-newson