Category: hormone replacement therapy
Researchers at Johns Hopkins are reporting what is believed to be the first conclusive evidence in men that the long-term ill effects of vitamin D deficiency are amplified by lower levels of the key sex hormone estrogen, but not testosterone.
COLLEGE STATION -- A compound in coffee has been found to be estrogenic in studies by Texas AgriLife Research scientists.
New York, NY, October 28, 2009 -- Hormone replacement therapy (HRT) to treat menopausal estrogen deficiency has been in widespread use for over 60 years.
Women who developed new-onset breast tenderness after starting estrogen plus progestin hormone replacement therapy were at significantly higher risk for developing breast cancer than women on the combination therapy who didn't experience such tenderness, according to a new UCLA study.
Berlin, Germany: At least 124,000 new cancers in 2008 in Europe may have been caused by excess body weight, according to estimates from a new modelling study. The proportion of cases of new cancers attributable to a body mass index of 25kg/m2 or more were highest among women and in central European countries such as the Czech Republic, Latvia, Slovenia and Bulgaria.
Researchers at the Yerkes National Primate Research Center, Emory University, have demonstrated that prairie voles may be a useful model in understanding the neurochemistry of social behavior. By influencing early social experience in prairie voles, researchers hope to gain greater insight into what aspects of early social experience drive diversity in adult social behavior.
Researchers at Yerkes National Primate Research Center, Emory University, contributed key comparative data for a landmark study showing African wild chimpanzees infected with simian immunodeficiency virus (SIV), an HIV-1-like virus, die prematurely and develop hallmarks of HIV-1 infection and AIDS.
COLUMBIA, Mo. -- Previous studies have found that postmenopausal women who have taken a combined estrogen and progestin hormone replacement therapy have increased their risk of developing progestin-accelerated breast tumors.
SEATTLE -- The relationship between migraine headaches in women and a significant reduction in breast cancer risk has been confirmed in a follow-on study to landmark research published last year and conducted by scientists at Fred Hutchinson Cancer Research Center.
Older women who take hormone therapy to relieve menopausal symptoms may get the added benefit of reduced body fat if they are physically active, according to a new study. The results were presented at The Endocrine Society's 91st Annual Meeting in Washington, D.C.
A lung cancer treatment that inhibits nicotine receptors was shown to double survival time in mice, according to Italian researchers.
The results of the early phase animal model study were reported in the June 15 issue of the American Journal of Respiratory and Critical Care Medicine.
The risk of developing breast cancer due to taking hormone replacement therapy appears to be the same for women with a family history of the disease and without a family history, a University of Rochester Medical Center study concluded.
Giving hormone doses in pulses, rather than as a steady exposure, may maximize the benefits and limit the side effects now associated with hormone therapies. Researchers have found that two distinct biochemical pathways interact in brain cells of female rats to trigger mating behavior. They studied rats that, similar to post-menopausal women, were not naturally producing estrogen. By giving estrogen replacement to the rats, the scientists studied the actions of the hormone at the level of the brain cell's protective outer membrane, and inside the nucleus where the cell's DNA is housed.
Medroxyprogesterone acetate (MPA), a synthetic form of the naturally occurring steroid hormone progesterone widely used in contraceptives and hormone replacement therapy (HRT), increases aggression and anxiety and reduces sexual activity in female monkeys, according to a study published in the June edition of The Journal of Clinical Endocrinology and Metabolism. The investigators, from the Yerkes National Primate Research Center of Emory University and the Center for Behavioral Neuroscience (CBN) in Atlanta, say the findings may explain anecdotal reports of mood changes, depression and loss of libido in some women who use MPA for contraception and HRT.
Last March, a multi-center national study made headlines by concluding that taking a combination of the hormones estrogen and progestin did not improve the quality of life for women who are free of menopause-related symptoms but did expose them to a slightly higher risk of heart attacks, strokes and breast cancer. For that reason, many medical scientists began recommending against the combined therapy in the absence of such symptoms, saying the risks of estrogen plus progestin outweighed the benefits.
