Παρασκευή 23 Αυγούστου 2013

ScienceDaily: Top Health News

ScienceDaily: Top Health News


Fecal microbiota transplantation as effective treatment for C. difficile and other diseases

Posted: 22 Aug 2013 04:45 PM PDT

Fecal microbiota transplantation has emerged as a highly effective treatment for recurrent Clostridium difficile infection, with very early experience suggesting that it may also play a role in treating other gastrointestinal (GI) and non-GI diseases.

Cells that line blood vessels created

Posted: 22 Aug 2013 04:45 PM PDT

In a scientific first, scientists have successfully grown the cells that line the blood vessels -- called vascular endothelial cells -- from human induced pluripotent stem cells, revealing new details about how these cells function.

Toxic nanoparticles might be entering human food supply

Posted: 22 Aug 2013 04:45 PM PDT

Farmers have used silver nanoparticles as a pesticide because of their capability to suppress the growth of harmful organisms. However, a growing concern is that these particles could pose a potential health risk to humans and the environment. In a new study, researchers have developed a reliable method for detecting silver nanoparticles in fresh produce and other food products.

Go on, volunteer -- it could be good for you!

Posted: 22 Aug 2013 04:44 PM PDT

Volunteering can improve mental health and help you live longer, finds the study which pools and compares data from multiple experimental trials and longitudinal cohort studies. Some observational evidence points to around a 20 per cent reduction in mortality among volunteers compared to non-volunteers in cohort studies. Volunteers also reported lower levels of depression, increased life satisfaction and enhanced well-being, although the findings have yet to be confirmed in trials.

Art preserves skills despite onset of vascular dementia in 'remarkable' case of a Canadian sculptor

Posted: 22 Aug 2013 04:44 PM PDT

The ability to draw spontaneously as well as from memory may be preserved in the brains of artists long after the deleterious effects of vascular dementia have diminished their capacity to complete simple, everyday tasks, according to a new study by physicians.

In mild strokes, ultra-early treatment may eliminate risk of disability

Posted: 22 Aug 2013 04:42 PM PDT

In the case of mild or moderate strokes, getting treatment ultra-fast – within 90 minutes of experiencing symptoms – greatly reduces the risk of suffering disability, according to a new study.

Stroke risk similar among men and women smokers worldwide

Posted: 22 Aug 2013 04:42 PM PDT

Smoking cigarettes may cause similar stroke risks for men and women, but women smokers may be at greater risk for a more deadly and uncommon type of stroke, according to new research.

Single injection may revolutionize melanoma treatment

Posted: 22 Aug 2013 04:41 PM PDT

A new study could offer hope to people with melanoma, the deadliest form of skin cancer. Researchers are investigating whether an injectable known as PV-10 can shrink tumors and reduce the spread of cancer. PV-10 is a solution developed from Rose Bengal, a water-soluble dye commonly used to stain damaged cells in the eye. Early clinical trials show PV-10 can boost immune response in melanoma tumors, as well as the blood stream.

The stress and cancer link: 'Master-switch’ stress gene enables cancer's spread

Posted: 22 Aug 2013 04:41 PM PDT

In an unexpected finding, scientists have linked the activation of a stress gene in immune-system cells to the spread of breast cancer to other parts of the body.

Drug delivery: Why gold nanoparticles can penetrate cell walls

Posted: 22 Aug 2013 11:22 AM PDT

Gold nanoparticles with special coatings can deliver drugs or biosensors to a cell's interior without damaging it.

New risk model sheds light on arsenic risk in China's groundwater

Posted: 22 Aug 2013 11:20 AM PDT

Arsenic-laden groundwater used for cooking and drinking could pose a risk to the health of almost 20 million people across China. The estimates are based on a risk model incorporating geological and hydrological data, as well as measurements of arsenic in wells.

Restricting food and fluids during labor is unwarranted, study suggests

Posted: 22 Aug 2013 11:19 AM PDT

Despite the longstanding, widespread practice of restricting women's food and fluid intake during labor, a large-scale analysis finds it unwarranted and supports women eating and drinking as they please.

BMI not accurate enough: Obesity/mortality paradox demonstrates urgent need for more refined metabolic measures

Posted: 22 Aug 2013 11:19 AM PDT

Researchers point out that the body mass index (BMI), based on the weight and height, is not an accurate measure of body fat content and does not account for critical factors that contribute to health or mortality, such as fat distribution, proportion of muscle to fat, and the sex and racial differences in body composition.

How hormones and microbes drive the gender bias in autoimmune diseases

Posted: 22 Aug 2013 09:28 AM PDT

Females can mount more powerful immune responses than males, but the flip side of this enhanced protection against infections is a greater risk for autoimmune disorders. A new study reveals that certain gut microbes prevalent in males can help protect them against type 1 diabetes. The study demonstrates that these microbes cooperate with sex hormones to cause this gender bias and provides an important framework that could lead to better treatments.

Mending a broken heart? Scientists transform non-beating human cells into heart-muscle cells

Posted: 22 Aug 2013 09:27 AM PDT

In the aftermath of a heart attack, cells within the region most affected shut down. They stop beating. And they become entombed in scar tissue. But now, scientists have demonstrated that this damage need not be permanent -- by finding a way to transform the class of cells that form human scar tissue into those that closely resemble beating heart cells.

Why people with red hair have a higher risk of developing melanoma

Posted: 22 Aug 2013 09:25 AM PDT

Researchers have found that the same genetic mutation responsible for red hair also promotes a well-known cancer-causing pathway.

Better management of free time ensures happier retirement

Posted: 22 Aug 2013 08:21 AM PDT

How well retirees plan their free time is more important than the amount of free time on hand, study reveals. Retirees should be masters of their own destiny, and actively manage and plan their free time to ensure a happy and fulfilling retirement. A new study found that the effective management of free time has a far greater impact on a retiree's quality of life than the amount of time the person actually has available for leisure activities.

Engaging in a brief cultural activity can reduce implicit prejudice

Posted: 22 Aug 2013 07:50 AM PDT

A small cue of social connection to someone from another group -- such as a shared interest -- can help reduce prejudice immediately and up to six months later, according to new research.

Well-being not a priority for workaholics

Posted: 22 Aug 2013 07:35 AM PDT

Researchers found a preliminary link between workaholics and reduced physical and mental well-being.

Brain size may signal risk of developing an eating disorder

Posted: 22 Aug 2013 06:11 AM PDT

New research indicates that teens with anorexia nervosa have bigger brains than teens that do not have the eating disorder. That is according to a study that examined a group of adolescents with anorexia nervosa and a group without.

Breast is best: Good bacteria arrive from mum's gut via breast milk

Posted: 22 Aug 2013 06:10 AM PDT

Scientists have discovered that important 'good' bacteria arrive in babies' digestive systems from their mother's gut via breast milk.

Family history of diabetes increases the risk of prediabetes by 26 percent, with effect most evident in non-obese

Posted: 22 Aug 2013 06:10 AM PDT

A study involving more than 8,000 participants has shown that people with a family history of diabetes see their risk of prediabetes increase by 26 percent.

Flu shot may halve heart attack risk in middle aged with narrowed arteries

Posted: 22 Aug 2013 06:10 AM PDT

The flu shot seems to almost halve the risk of heart attacks in middle aged people with narrowed arteries, finds new research.

Half of all UK 7 year olds not exercising for recommended minimum

Posted: 22 Aug 2013 06:05 AM PDT

Half of all UK seven year olds are sedentary for six to seven hours every day, and only half clock up the recommended daily minimum of moderate to vigorous physical activity, indicates new research.

A virus changes its stripes: Human outbreak of eastern equine encephalitis

Posted: 22 Aug 2013 06:05 AM PDT

In the summer of 2010, the eastern Panamanian province of Darien experienced a phenomenon that had never been seen before in Latin America: a human outbreak of eastern equine encephalitis. Scientists have now investigated the outbreak, testing samples from 174 patients and many horses.

Depressed people have a more accurate perception of time

Posted: 22 Aug 2013 06:03 AM PDT

People with mild depression underestimate their talents.  However, new research shows that depressed people are more accurate when it comes to time estimation than their happier peers.

Pop! Bursting the bubble on carbonation

Posted: 22 Aug 2013 05:58 AM PDT

New research reveals that bubbles are not necessary to experience the unique 'bite' of carbonated beverages, which actually comes from carbonic acid. Bubbles do, however, enhance carbonation's bite through the light physical feel of the bubbles picked up by our sense of touch.

Human brains are hardwired for empathy, friendship

Posted: 22 Aug 2013 05:58 AM PDT

Perhaps one of the most defining features of humanity is our capacity for empathy -- the ability to put ourselves in others' shoes. A new study strongly suggests that we are hardwired to empathize because we closely associate people who are close to us -- friends, spouses, lovers -- with our very selves.

New molecular mechanism tied to pancreatic cancer

Posted: 21 Aug 2013 02:01 PM PDT

New research could aid efforts to diagnose and treat one of the most lethal and hard-to-treat types of cancer.

Study implicates dopamine in food restriction, drug abuse

Posted: 20 Aug 2013 03:58 PM PDT

Why are food-restricted animals more vulnerable to the effects of drugs of abuse? Researchers found a clue: dopamine neurons in a specific brain region fire bursts more than twice as frequently in chronically food-restricted mice.

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