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Scientists uncover new key to the puzzle of hormone therapy and breast cancer

PHILADELPHIA -- The use of postmenopausal hormone therapy has decreased over time in the United States, which researchers suggest may play a key role in the declining rate of atypical ductal hyper

Physical education key to improving health in low-income adolescents

School-based physical education plays a key role in curbing obesity and improving fitness among adolescents from low-income communities, according to a new study led by researchers at the Universit

Geneticists hunt for scleroderma triggers

Hanover, N.H. -- At its most benign, the autoimmune disease scleroderma can discolor parts of the skin of its sufferers.

Treating ROP in tiny preemies; better glaucoma follow-up in urban clinic

SAN FRANCISCO -- Highlights of today's Scientific Program of the 2009 American Academy of Ophthalmology (AAO) - Pan-American Association of Ophthalmology (PAAO) Joint Meeting include: John T.

Suffering caused by dialysis for nursing home seniors may outweigh its benefits, researchers find

STANFORD, Calif. -- Older Americans living in nursing homes experience a significant decline in their ability to perform simple daily tasks -- such as feeding themselves, getting dressed or brushing their teeth -- after starting dialysis, say researchers at the Stanford University School of Medicine.

Genome-wide study of autism published in Nature

In one of the first studies of its kind, an international team of researchers has uncovered a single-letter change in the genetic code that is associated with autism. The finding, published in the October 8 issue of the journal Nature, implicates a neuronal gene not previously tied to the disorder and more broadly, underscores a role for common DNA variation.

First direct information about the prion's molecular structure reported

A collaboration between scientists at Vanderbilt University and the University of California, San Francisco has led to the first direct information about the molecular structure of prions. In addition, the study has revealed surprisingly large structural differences between natural prions and the closest synthetic analogs that scientists have created in the lab.

The making of the male brain (estrogen required)

It's often said that overly macho males suffer from "too much testosterone." But a new study in mice reveals how estrogen might share in that blame.

UT Knoxville and ORNL researchers reveal key to how bacteria clear mercury pollution

KNOXVILLE -- Mercury pollution is a persistent problem in the environment. Human activity has lead to increasingly large accumulations of the toxic chemical, especially in waterways, where fish and shellfish tend to act as sponges for the heavy metal.

Banning smoking in public places and workplaces is good for the heart

Public smoking bans appear to significantly reduce the risk of heart attacks, particularly among younger individuals and nonsmokers, according to a new study published in the September 29, 2009, issue of the Journal of the American College of Cardiology. Researchers find that smoking bans can reduce the number of heart attacks by as much as 26 percent per year.

Pediatric strokes more than twice as common as previously reported

Imaging studies along with diagnostic codes on medical charts show that the rate of strokes in infants and children is two to four times higher than commonly thought, researchers report in Stroke: Journal of the American Heart Association.

"Traditional methods using diagnostic codes work fairly well to identify stroke in studies on adults, but they miss a large proportion of cases w

Gene variation that lets people get by on fewer zees transferred to create insomniac mice

(SALT LAKE CITY) -- A University of Utah sleep expert has joined with researchers at the University of California, San Francisco (UCSF), and Stanford University to identify a genetic variation in humans, which the scientists also developed in mouse models, that allows a rare number of people to require less sleep than others.

Persistent pain may accelerate signs of aging by 2-3 decades in middle-aged adults

Younger people with pain look similar in terms of their disability to people who are two to three decades older without pain, according to a study published in this month's issue of the Journal of the American Geriatric Society. The results of the study uncovered that people with pain develop the functional limitations classically associated with aging at much earlier ages.

Implantable defibrillators may not benefit women with heart failure

Implantable cardioverter-defibrillators do not appear to be associated with a reduced risk of death in women with advanced heart failure, according to a meta-analysis of previously published research in the September 14 issue of Archives of Internal Medicine, one of the JAMA/Archives journals.

Information about the use and accuracy of breast cancer tests is lacking, study finds

A new study finds that there is little information available about the use of new testing technologies and targeted therapies in breast cancer, specifically the anti-cancer drug trastuzumab (Herceptin).



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