Women who abruptly and prematurely suffer from estrogen deficiency caused by surgical menopause have a two fold increase in cognitive decline and dementia. This conclusion comes from research published in the March issue of the journal, Brain that was done on rats with surgical menopause, of which some were given no estrogen replacement, some late estrogen replacement, and some with immediate estrogen replacement. Only those with full estrogen replacement did not suffer from dementia.
Researchers also reported that estrogen reduced the risk for heart attack and stroke. This sounds contradictory to the Women's Health Initiative Study that showed replacing hormones with HRT increased the risk for heart attack, stroke, and many other disorders.
We must remember that HRT is NOT estrogen and progesterone replacement...it is replacement with horse estrogens and a progesterone-like drug manufactured by the pharmaceutical companies so they could patent it and convince MDs to prescribe it to their patients. Ahhh, business as usual!