Hormones linked to hardening of arteries

"Naturally produced sex hormones may influence the risk and progression of hardening of the arteries, Johns Hopkins researchers report in a recent study. The findings may help explain the increased risk men have of developing heart disease, which runs about two times higher than women's heart disease risk worldwide. The study suggests that older women who produce a relatively high amount of estrogen are more likely to develop coronary artery calcium (CAC), a component of the fatty plaque that builds up in blood vessels and hardens arteries. Older men with relatively high amounts of testosterone are also more likely to develop CAC. However, once CAC is present, higher testosterone appears to help prevent CAC from progressing too quickly in men's arteries. These findings were presented last week at the American Heart Association's annual scientific sessions in New Orleans" - Baltimore Sun

HRT 'can increase some women's risk of heart attack by a quarter'

"Taking the hormones for more than four years can raise the risk even further among women in their early 50s. But giving different hormones at different times could cut the likelihood of a heart attack for all women, according to the research. Previous studies have linked HRT with an increased risk of heart disease as well as other conditions like strokes and breast cancer. But earlier this year a panel of international experts declared that the therapy, taken by around 1 million women in Britain, was safe" - Telegraph