No beneficial effects were found on cognitive function, bone mineral density or plasma lipids when postmenopausal women age 60 years or older took soy protein supplements with isoflavones for one year, according to a study in the July 7 issue of The Journal of the American Medical Association (JAMA).
“The sudden decline in estrogen levels after menopause coincides with acceleration of several aging processes,” according to background information in the article. “On average, bone mineral density (BMD) decreases and cognitive function declines, whereas total cholesterol and low-density lipoprotein cholesterol (LDL-C) [the bad type of cholesterol] increase.” The authors write that some women have taken hormone therapy to counteract some of these changes; however, hormone therapy has short- and long-term risks. Isoflavones, estrogenlike compounds naturally occurring in plant foods, have been suggested as an alternative for traditional estrogen therapy with fewer adverse effects.
Sanne Kreijkamp-Kaspers, M.D., Ph.D., from the University Medical Center, Utrecht, the Netherlands, and colleagues conducted a study with 202 healthy postmenopausal women aged 60 to 75 years between April 2000 and September 2001 in the Netherlands. The women were randomly assigned to receive 25.6 grams of soy protein containing 99 milligrams (mg) of isoflavones or the placebo, a total milk protein as a powder, each of which could be mixed with food or beverages on a daily basis for 12 months. Cognitive testing was performed at baseline and at the final visit, one year later, using several standardized tests. Bone mineral density was measured at baseline and 12 months using dual-energy x-ray absorptiometry (DXA) scans, and plasma lipid levels also were assessed at baseline and 12 months.
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So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics
Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...
The historic first detection of gravitational waves from colliding black holes far outside our galaxy opened a new window to understanding the universe. A...
A team led by Austrian experimental physicist Rainer Blatt has succeeded in characterizing the quantum entanglement of two spatially separated atoms by observing their light emission. This fundamental demonstration could lead to the development of highly sensitive optical gradiometers for the precise measurement of the gravitational field or the earth's magnetic field.
The age of quantum technology has long been heralded. Decades of research into the quantum world have led to the development of methods that make it possible...
Cardiovascular tissue engineering aims to treat heart disease with prostheses that grow and regenerate. Now, researchers from the University of Zurich, the Technical University Eindhoven and the Charité Berlin have successfully implanted regenerative heart valves, designed with the aid of computer simulations, into sheep for the first time.
Producing living tissue or organs based on human cells is one of the main research fields in regenerative medicine. Tissue engineering, which involves growing...
A team of scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg investigated optically-induced superconductivity in the alkali-doped fulleride K3C60under high external pressures. This study allowed, on one hand, to uniquely assess the nature of the transient state as a superconducting phase. In addition, it unveiled the possibility to induce superconductivity in K3C60 at temperatures far above the -170 degrees Celsius hypothesized previously, and rather all the way to room temperature. The paper by Cantaluppi et al has been published in Nature Physics.
Unlike ordinary metals, superconductors have the unique capability of transporting electrical currents without any loss. Nowadays, their technological...
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