الثلاثاء، 17 يناير 2012

ScienceDaily: Health & Medicine News

ScienceDaily: Health & Medicine News

No walk in the park: Factors that predict walking difficulty in elderly

Posted: 16 Jan 2012 05:08 PM PST

Researchers have found that the likelihood of becoming disabled with age increases with the following factors: having a chronic condition or cognitive impairment; low physical activity; slower gross motor coordination; having poor lower-extremity function; and being hospitalized. Women are also more likely than men to become disabled in their later years.

Breast cancer spread triggered by a cleaver-wielding protein on cancer cell's surface

Posted: 16 Jan 2012 05:06 PM PST

Scientists have exposed a cell pathway that breast tumor cells use to destruct local tissue neighborhood. Cancer cells may use this pathway to free themselves from mammary epithelial tissue architecture, to spread to surrounding tissues. The cell pathway, the researchers found, is a biochemical chain of events leading to activation of a protein-cleaving enzyme on the surface of the tumor cells.

Broken arm? Brain shifts quickly when using a sling or cast

Posted: 16 Jan 2012 05:06 PM PST

Using a sling or cast after injuring an arm may cause your brain to shift quickly to adjust, according to a new study. The study found increases in the size of brain areas that were compensating for the injured side, and decreases in areas that were not being used due to the cast or sling.

Traditional physical autopsies – not high-tech 'virtopsies' – still the gold standard for determining cause of death, experts claim

Posted: 16 Jan 2012 05:06 PM PST

TV crime shows like Bones and CSI are quick to explain each death by showing highly detailed scans and video images of victims' insides. Traditional autopsies, if shown at all, are at best in supporting roles to the high-tech equipment, and usually gloss over the sometimes physically grueling tasks of sawing through skin and bone.

Headphones linked to pedestrian deaths, injuries

Posted: 16 Jan 2012 05:05 PM PST

Serious injuries to pedestrians listening to headphones have more than tripled in six years, according to new research. In many cases, the cars or trains are sounding horns that the pedestrians cannot hear, leading to fatalities in nearly three-quarters of cases.

Biologists a step nearer to solving the Parkinson's conundrum

Posted: 16 Jan 2012 12:43 PM PST

Scientists have made a significant step forward in isolating the cause of Parkinson's disease in younger adults.

Revolutionary surgical technique for perforations of the eardrum

Posted: 16 Jan 2012 08:26 AM PST

Scientists announce a revolutionary surgical technique for perforations of the eardrum. The 20-minute procedure in outpatient clinic without general anesthetic may replace long and costly day surgery.

Some like it hot: Popular yoga style cranks up the heat

Posted: 16 Jan 2012 06:59 AM PST

Yoga is one of the hottest fitness trends and a style known as "hot yoga" is gaining in popularity. While the practice can offer health benefits, people practicing hot yoga, especially beginners, should take certain precautions, according to an expert.

New indicator may help identify patients with increased risk from throat cancer

Posted: 16 Jan 2012 06:58 AM PST

Researchers have found a new indicator that may predict which patients with a common type of throat cancer are most likely have the cancer spread to other parts of their bodies.

Fewer children require hospitalization following drowning-related incidents

Posted: 16 Jan 2012 06:58 AM PST

Fewer children required hospitalization following a drowning incident over the last two decades, according to a new study. According to the study, pediatric hospitalizations from drowning-related incidents declined 51 percent from 1993 to 2008. The rates declined significantly for all ages and for both genders, although drowning-related hospitalizations remained higher for boys at every age.

Improved ergonomics for wheelchair users

Posted: 16 Jan 2012 06:58 AM PST

Engineers have succeeded in developing an ergonomic seat for electric wheelchairs which encourages the user to move around frequently. The aim is to enhance the freedom of movement of wheelchair users with a range of disabilities.

Wood-burning stoves: Harmful or safe?

Posted: 16 Jan 2012 06:58 AM PST

Wood-burning stoves are a popular source of heating in many countries. However in recent years there has been much debate about the potential negative health effects associated with wood smoke. A researcher has now studied the influence of combustion conditions on the emissions and their health effects.

Changes in tumor cells that lead to metastasis

Posted: 16 Jan 2012 06:55 AM PST

Researchers have identified the genetic and phenotypic changes that cause tumor progression and metastasis. The process of metastasis -- which is the main cause of cancer death -- is caused by tumor cells invading distant organs with no direct anatomical relationship with the organ originally affected.

Scientists shed new light on link between 'killer cells' and diabetes

Posted: 15 Jan 2012 11:00 AM PST

Killer T-cells in the human body which help protect us from disease can inadvertently destroy cells that produce insulin, new research has uncovered.

New Drug-Coated Balloon Offers Hope for PAD

Posted: 13 Jan 2012 06:10 PM PST

Peripheral Artery Disease, also known as PAD, affects about eight million Americans. It is a narrowing of arteries in the arm or leg. The risk increases with age, and for people with high blood pressure, high cholesterol, or diabetes. The threat is even greater for smokers. People with PAD are four to five times more likely to suffer a heart attack or stroke. It can also lead to gangrene and amputation.
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