Estrogen therapy does not appear to reduce the risk of heart attack or coronary death in healthy postmenopausal women, although some data suggest a lower coronary heart disease risk in women aged 50 to 59 years, according to a new article in the February 13 issue of Archives of Internal Medicine, one of the JAMA/Archives journals.
The Womens Health Initiative (WHI) included two large clinical trials that evaluated whether hormone therapy with estrogen reduces the risk of coronary heart disease in postmenopausal women, according to background information in the article. In the part of the study designed to test estrogen therapy alone, 10,739 women aged 50 to 79 years who had undergone hysterectomy were assigned to take either conjugated equine estrogens--a mix of several estrogens--or a placebo. Though researchers had planned to study the women for 8.5 years, the estrogen-only trial was stopped in March 2004 after only 6.8 years because the hormone treatment appeared to increase the risk of stroke.
Judith Hsia, M.D., of George Washington University, Washington, D.C., and colleagues analyzed data from the estrogen-only portion of the WHI study. During the course of the trial, the women taking hormones experienced 201 coronary events, which included heart attacks and coronary deaths, while those taking placebo had 217 events. Overall, the risk was similar for women who took hormones compared with those who did not, though there was a suggestion of lower risk in women age 50 to 59 years.
Sarah Freeman | EurekAlert!
Another reason to exercise: Burning bone fat -- a key to better bone health
19.05.2017 | University of North Carolina Health Care
Disrupted fat breakdown in the brain makes mice dumb
19.05.2017 | Rheinische Friedrich-Wilhelms-Universität Bonn
Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.
Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...
An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...
In the race to produce a quantum computer, a number of projects are seeking a way to create quantum bits -- or qubits -- that are stable, meaning they are not much affected by changes in their environment. This normally needs highly nonlinear non-dissipative elements capable of functioning at very low temperatures.
In pursuit of this goal, researchers at EPFL's Laboratory of Photonics and Quantum Measurements LPQM (STI/SB), have investigated a nonlinear graphene-based...
Dental plaque and the viscous brown slime in drainpipes are two familiar examples of bacterial biofilms. Removing such bacterial depositions from surfaces is...
For the first time, scientists have succeeded in studying the strength of hydrogen bonds in a single molecule using an atomic force microscope. Researchers from the University of Basel’s Swiss Nanoscience Institute network have reported the results in the journal Science Advances.
Hydrogen is the most common element in the universe and is an integral part of almost all organic compounds. Molecules and sections of macromolecules are...
22.05.2017 | Event News
17.05.2017 | Event News
16.05.2017 | Event News
22.05.2017 | Materials Sciences
22.05.2017 | Life Sciences
22.05.2017 | Physics and Astronomy