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Health / Aging

Saliva proteins change as women age

In a step toward using human saliva to tell whether those stiff joints, memory lapses, and other telltale signs of aging are normal or red flags for disease, scientists are describing how the protein content of women's saliva change with advancing age. The...
Science Daily Sat, 21 Nov 2009 17:00:00 EST

Surgery not linked to memory problems in older patients

For years, it has been widely assumed that older adults may experience memory loss and other cognitive problems following surgery. But a new study questions that assumption. In the 575 patients they studied, the investigators did not detect any long-term c...
Science Daily Thu, 19 Nov 2009 23:00:00 EST

Scientists find molecular trigger that helps prevent aging and disease

Researchers set out to address a question that has been challenging scientists for years: How does dietary restriction produce protective effects against aging and disease? And the reverse: how does overconsumption accelerate age-related disease? An answer...
Science Daily Wed, 18 Nov 2009 00:00:00 EST

New culprit for viral infections among elderly -- an overactive immune response

Researchers have found that exaggerated responses of the immune system explain why the elderly succumb to viral infections more readily than younger people. The study bucks the general belief that declining immune responses are to blame for susceptibility ...
Science Daily Wed, 18 Nov 2009 00:00:00 EST

New neuroimaging analysis technique identifies impact of Alzheimer's disease gene in healthy brains

Brain imaging can offer a window into risk for diseases such as Alzheimer's disease. A new study has demonstrated that genetic risk is expressed in the brains of even those who are healthy, but carry some risk for AD.
Science Daily Tue, 17 Nov 2009 20:00:00 EST

Potential treatment for Huntington's disease

Normal synaptic activity in nerve cells protects the brain from the misfolded proteins associated with Huntington's disease, researchers have discovered. They also found that the drug Memantine, which is approved to treat Alzheimer's disease, successfully ...
Science Daily Mon, 16 Nov 2009 05:00:00 EST

Analyzing structural brain changes in Alzheimer's disease

In a study that promises to improve diagnosis and monitoring of Alzheimer's disease, scientists have developed a fast and accurate method for quantifying subtle, sub-regional brain volume loss using magnetic resonance imaging.
Science Daily Mon, 16 Nov 2009 00:00:00 EST

Are doctors getting slower or are patients getting sicker?

People are going to the doctor's office more often--and for longer visits than nine years before. So, has care improved or do people just need more medical attention? It's likely the latter, conclude the authors of a new paper in the Archives of Interna...
Scientific American Mon, 09 Nov 2009 16:55:00 EST

Rethinking ''Hobbits'': What They Mean for Human Evolution (preview)

In 2004 a team of Australian and Indonesian scientists who had been excavating a cave called Liang Bua on the Indonesian island of Flores announced that they had unearthed something extraordinary: a partial skeleton of an adult human female who would have ...
Scientific American Mon, 09 Nov 2009 08:00:00 EST

Sugar Negates Worm's Life-Extending Mutation

[ The following is an exact transcript of this podcast. ]For worms fed a sugary diet, life is sweet. But short. According to a new study published in the journal Cell Metabolism , consistently adding a small amount of sugar to a worm's regular diet of bac...
Scientific American Tue, 03 Nov 2009 11:55:08 EST

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