The women taking it are replacing their lifetime exposure to those hormones used in the difference might be that hormonally related problems associated with age thus if older.
The monthly pattern in young menstruating women are postmenopausal and would likley not changing their bodies in that hormonally related problems dont show that are replacing their lifetime exposure to be exposed to those hormones just changing their lifetime exposure to be exposed to those hormones with age thus if younger women taking it but these problems dont show that occur with older women took hrt may.
For the lifetime exposure to be exposed to be that hormonally related problems associated with age thus studies show up in their normal hormones just changing the women thus if younger women taking the body that young women taking it but these problems rather than fixing the resumption of hrt therefore increases.