Hormone replacement therapy (HRT) for postmenopausal women does not provide any protection against cardiovascular diseases; in some cases, risks of heart attacks increased.

Overall, the researchers found no evidence that hormone therapy protects women from cardiovascular diseases, non-fatal heart attacks or angina. This applies to healthy women and women with pre-existing heart conditions. Instead, the findings suggested a small increased risk of stroke for post-menopausal women. The researchers found some evidence that women who started treatment within the first 10 years of menopause seem to have very little protection against death and heart attacks, and no increased risk of stroke. But there was an increased risk of deep vein thrombosis (DVT) even in this group.
Dr Henry Boardman, author of the study at the University of Oxford, said, "The harms and benefits of hormone therapy vary according to the age of the woman, when they started their treatment. Hormone therapy remains a valid treatment option for women who are significantly troubled by menopausal symptoms. However the risks and benefits of such treatment vary according to age and medical history. Discussion with your GP is recommended when considering treatment."
Source-Medindia