A new study suggests that a common menopause treatment may influence how effectively certain weight-loss medications work.

CHICAGO — Taking hormone pills for several years after menopause didn’t shorten older women’s lifespans, according to the longest follow-up yet of landmark research that transformed thinking on risks ...

Researchers at the University of Oulu have identified a previously unknown mechanism in humans that may explain why certain medicines and environmental chemicals disrupt the balance of sex hormones.

The difference in epidemiology of fibromyalgia and chronic fatigue syndrome has long led researchers to postulate that sex hormones may play a role in the perception of pain in fibromyalgia.

Once-promising drugs that were abandoned in the fight against breast cancer still could be effective in obese patients, new research suggests. In laboratory tests, hormones produced by fat cells ...

FILE - In this Dec. 12, 2002 file photo, Dr. JoAnn Manson poses with a printout from a study she directed on hormone replacement therapy for women at her office in Boston. In research results released ...

SALT LAKE CITY, UTAH–--A common treatment for some men with prostate cancer at risk of recurring may lead to prolonged survival, but a new study shows at what cost. In an oral presentation today at ...

The side effects many women get from hormone therapies for breast cancer partly reflect their expectations, scientists reported on Tuesday in Annals of Oncology, implying that if patients adjusted ...

The growing use of growth and sex hormones to stay youthful in old age carries troubling side effects that could outweigh potential benefits, according to a study in today’s Journal of the American ...

The health service said young people who already receive the drugs will continue to do so.

In the 1970s, the contraceptive pill was the most frequently used method of contraception in Western countries; in Germany, for example, one in three women used "the pill." It is safe and reliable, ...