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Thursday, September 11, 2014

ScienceDaily: Top Health News

ScienceDaily: Top Health News


Neuroscientists decode brain maps to discover how we take aim

Posted: 10 Sep 2014 04:02 PM PDT

A new brain map shows how the brain encodes allocentric and egocentric space in different ways during activities that involve manual aiming. The study finding will help healthcare providers to develop therapeutic treatment for patients with brain damage in these two areas, according to the neuroscientists.

Chemists discover the way nose perceives common class of odors

Posted: 10 Sep 2014 04:02 PM PDT

Biologists claim that humans can perceive and distinguish a trillion different odors, but little is known about the underlying chemical processes involved. Biochemists have found an unexpected chemical strategy employed by the mammalian nose to detect chemicals known as aldehydes.

1 in 4 people with diabetes worldwide live in China, but a new approach could help transform their care

Posted: 10 Sep 2014 04:01 PM PDT

Diabetes has become a major public health crisis in China, but a new collaborative approach to care that uses registries and community support could help improve diabetes care, according to a new three-part series about diabetes in China recently published.

Diverse neighborhoods may help infants' social learning

Posted: 10 Sep 2014 03:59 PM PDT

Experiencing diverse communities by hearing different languages at the park, on a bus or in the grocery store may make babies more open-minded in their social learning, a new study finds.

Can your blood type affect your memory in later years?

Posted: 10 Sep 2014 03:59 PM PDT

People with blood type AB may be more likely to develop memory loss in later years than people with other blood types, according to a study. AB is the least common blood type, found in about 4 percent of the U.S. population. The study found that people with AB blood were 82 percent more likely to develop the thinking and memory problems that can lead to dementia than people with other blood types.

'Immortal' flatworms: Weapon against bacteria

Posted: 10 Sep 2014 11:09 AM PDT

A novel mode of defense against bacteria, such as the causal agent of tuberculosis or Staphylococcus aureus, has been identified in humans by studying a small, aquatic flatworm, the planarian. This discovery highlights the importance of studying alternative model organisms, and opens the way towards new treatments against bacterial infections.

Mosquito fact and fiction

Posted: 10 Sep 2014 11:09 AM PDT

A mosquito researcher has collected interesting facts and stories about his research subjects, nature's ultimate bioterrorists.

Impact of violent media on the brain: Depends on each individual's brain circuitry, study finds

Posted: 10 Sep 2014 11:08 AM PDT

With the longstanding debate over whether violent movies cause real world violence as a backstop, a study has found that each person's reaction to violent images depends on that individual's brain circuitry, and on how aggressive they were to begin with.

Even small stressors may be harmful to men's health, new research shows

Posted: 10 Sep 2014 10:25 AM PDT

Older men who lead high-stress lives are likely to die earlier than the average for their peers, new research shows. The study looked at two types of stress: the everyday hassles of such things as commuting, job stress or arguments with family and friends; and significant life events, such as job loss or the death of a spouse.

Cyberbullying increases as students age, study finds

Posted: 10 Sep 2014 10:25 AM PDT

As students' age they are verbally and physically bullied less but cyberbullied more, non-native English speakers are not bullied more often than native English speakers and bullying increases as students' transition from elementary to middle school. Those are among the findings of a wide-ranging paper just released.

Sports broadcasting gender roles echoed on Twitter, study shows

Posted: 10 Sep 2014 10:25 AM PDT

Twitter provides an avenue for female sports broadcasters to break down gender barriers, yet it currently serves to express their subordinate sports media roles, researchers have concluded after conducting a study.

Fish, fatty acid consumption associated with lower risk of hearing loss in women

Posted: 10 Sep 2014 10:25 AM PDT

Consumption of 2 or more servings of fish per week was associated with a lower risk of hearing loss in women, researchers have found. "Acquired hearing loss is a highly prevalent and often disabling chronic health condition," stated one corresponding author. "Although a decline in hearing is often considered an inevitable aspect of aging, the identification of several potentially modifiable risk factors has provided new insight into possibilities for prevention or delay of acquired hearing loss."

Algorithms reveal forecasting power of tweets, predicts individual's behavior

Posted: 10 Sep 2014 10:24 AM PDT

Researchers used 500 million tweets to develop algorithms that not only paint a picture of everyday human dynamics, but can predict an individual's behavior hours in advance.

Missing piece found to help solve concussion puzzle

Posted: 10 Sep 2014 09:06 AM PDT

A new, 5- to 10-minute test that could be added to a clinician's concussion evaluation toolkit for a more comprehensive assessment of the injury has been developed by scientists. "For the past five to 10 years, our research has revealed that vision issues, fogginess and dizziness are symptoms associated with the worst outcomes in our patients. So we set out to create an evidence-based examination to assess these areas," researchers report.

Halving the risk of preterm birth for some twin pregnancies

Posted: 10 Sep 2014 09:06 AM PDT

The risk of preterm birth could be halved for a specific group of 'super high-risk' twin pregnancies. The results could help to save babies' lives throughout the world and prevent serious health complications after birth.

How brain can tell magnitude of errors

Posted: 10 Sep 2014 09:05 AM PDT

Researchers have made another advance in understanding how the brain detects errors caused by unexpected sensory events. This type of error detection is what allows the brain to learn from its mistakes, which is critical for improving fine motor control.

A novel method for portable detection of potent drugs known as 'bath salts'

Posted: 10 Sep 2014 09:05 AM PDT

Despite being outlawed in 2012 in the US, the synthetic drugs known as 'bath salts' -- which really aren't meant for your daily bath -- are still readily available in some retail shops, on the Internet and on the streets. To help law enforcement, scientists are developing a novel method that could be the basis for the first portable, on-site testing device for identifying the drugs.

Healthcare workers wash hands more often when in presence of peers

Posted: 10 Sep 2014 09:04 AM PDT

Nationally, hand hygiene adherence by healthcare workers remains staggeringly low despite its critical importance in infection control. A new study found that healthcare workers' adherence to hand hygiene is better when other workers are nearby.

'Electronic skin' could improve early breast cancer detection

Posted: 10 Sep 2014 09:04 AM PDT

For detecting cancer, manual breast exams seem low-tech compared to other methods such as MRI. But scientists are now developing an 'electronic skin' that 'feels' and images small lumps that fingers can miss. Knowing the size and shape of a lump could allow for earlier identification of breast cancer, which could save lives.

First clinical trial on HER-2-negative breast cancer with nintedanib shows promising results

Posted: 10 Sep 2014 09:04 AM PDT

The experimental drug nintedanib, combined with standard chemotherapy with paclitaxel, causes a total remission of tumors in 50 percent of patients suffering from early HER-2-negative breast cancer, the most common type of breast cancer.

Monitoring response of bone metastases to treatment using MRI, PET

Posted: 10 Sep 2014 09:04 AM PDT

Imaging technologies are useful in evaluating response to cancer treatment, and this can be done quite effectively for most tumors using RECIST, Response Evaluation Criteria in Solid Tumors. RECIST works well for tumors located in soft tissue, but not cancers that spread to the bone. More effort, therefore, is needed to improve our understanding of how to monitor the response of bone metastases to treatment using MRI and PET imaging.

How skin falls apart: Pathology of autoimmune skin disease revealed at the nanoscale

Posted: 10 Sep 2014 09:04 AM PDT

Researchers studying a rare, blistering disease have discovered new details of how autoantibodies destroy healthy cells in skin. The research has the potential to help clinicians identify who may be at risk for developing Pemphigus vulgaris (PV), an autoimmune skin disorder, by distinguishing pathogenic (disease-causing) autoimmune antibodies from other nonpathogenic autoimmune antibodies.

Nerve impulses can collide, continue unaffected

Posted: 10 Sep 2014 09:04 AM PDT

According to the traditional theory of nerves, two nerve impulses sent from opposite ends of a nerve annihilate when they collide. New research now shows that two colliding nerve impulses simply pass through each other and continue unaffected. This supports the theory that nerves function as sound pulses.

Video game teaches kids how to code

Posted: 10 Sep 2014 09:04 AM PDT

Computer scientists have successfully funded on Kickstarter a new and improved version of CodeSpells, a first-person player game they developed that teaches players how to code.

Researchers unlock genetic code of cancer-causing liver fluke parasite

Posted: 10 Sep 2014 07:29 AM PDT

The genetic code of the liver fluke parasite, Opisthorchis viverrini, has been cracked by an international team of researchers using a unique DNA analysis technique. Opisthorchis viverrini is a trematode that infects millions in Asia, and is a significant risk factor for Cholangiocarcinoma (CCA) or bile duct cancer.

Researchers watch lipid molecules in motion

Posted: 10 Sep 2014 07:29 AM PDT

Researchers have 'filmed' the movement of lipid molecules using an X-ray stroboscope. Their study offers new insights into the dynamics of biomolecules, which compose materials such as cell membranes.

Working during depression can offer health benefits to employees

Posted: 10 Sep 2014 07:29 AM PDT

Attending work while suffering a depressive illness could help employees better manage their depression more than taking a sickness absence from work, a new study has found. The study is the first to estimate the long-term costs and health outcomes of depression-related absence as compared to individuals who continue to work among employees with depression.

Blocking single receptor could halt rheumatoid arthritis

Posted: 10 Sep 2014 07:28 AM PDT

Researchers have shown for the first time how the activation of a receptor provokes the inflammation and bone degradation of rheumatoid arthritis -- and that activation of this one receptor, found on cells in the fluid of arthritic joints, is all that is required.

Appetite and mortality: The two are closely connected in the eldery

Posted: 10 Sep 2014 06:32 AM PDT

A simple question about appetite can provide insights into old people's general health that may help reduce their risk of dying. A team has now investigated the connection between appetite and mortality in great depth.

Female baboons with male companions live longer

Posted: 10 Sep 2014 06:32 AM PDT

Numerous studies have linked social interaction to improved health and survival in humans, and new research confirms that the same is true for baboons. A long-term study of more than 200 wild female baboons finds that the most sociable females live two to three years longer than their socially isolated counterparts. Socializing with males gave females an even bigger longevity boost than socializing with other females, the researchers found.

Air pollution harmful to young brains, study finds

Posted: 10 Sep 2014 06:32 AM PDT

Pollution in many cities threatens the brain development in children. Findings from a recent study reveal that children living in megacities are at increased risk for brain inflammation and neurodegenerative changes, including Alzheimer's or Parkinson's disease.

Back pain killing your sex life? Study reveals best positions to save your spine

Posted: 10 Sep 2014 06:32 AM PDT

Contrary to popular belief, spooning is not always the best sex position for those with a bad back, according to new research. For the first time ever, scientists have successfully documented the way the spine moves during sex and discovered exactly why certain positions are better than others when it comes to avoiding back pain.

Clinical trial to test safety of stem cell-derived therapy for type 1 diabetes

Posted: 10 Sep 2014 06:30 AM PDT

The first-ever human Phase I/II clinical trial of a stem cell-derived therapy for patients with Type 1 diabetes has been launched by scientists. The trial will assess the safety and efficacy of a new investigational drug called VC-01, which was recently approved for testing by the U.S. Food and Drug Administration. The 2-year trial will involve four to six testing sites and will recruit approximately 40 study participants.

Analysis of DEA rules allowing pharmacies to accept unused medication

Posted: 10 Sep 2014 06:30 AM PDT

It will soon be much easier for Americans to safely dispose of unwanted medications. The U.S. Department of Justice and the Drug Enforcement Administration (DEA) just announced rules allowing participating pharmacies, certain hospitals, clinics, and long-term care facilities to collect medication for proper disposal. The rules go into effect next month.

Thyroid cancer rates in Pennsylvania rising faster than rest of country as a whole

Posted: 10 Sep 2014 06:30 AM PDT

Incidence of thyroid cancer is rising faster in Pennsylvania than in the rest of the United States as a whole, according to researchers. Papillary thyroid cancer, responsible for most of this increase, is very treatable and has a 95 percent 30-year survival rate. There are no symptoms in all but the latest stages and the cancer is typically discovered incidentally during a physical exam or on an imaging study.

Olaparib tablet safe in pretreated ovarian cancer patients

Posted: 10 Sep 2014 05:38 AM PDT

An oral tablet form of a PARP inhibitor, olaparib, given in combination with chemotherapy, was safe in heavily pretreated ovarian cancer patients, and patients with BRCA mutations may have a better response compared with those without a BRCA mutation, according to phase Ib clinical trial data.

Smartphones may aid in dietary self-monitoring

Posted: 10 Sep 2014 05:38 AM PDT

Smartphones have seen wide adoption among Americans in recent years because of their ease of use and adaptability. With that in mind, researchers examined how smartphone use affected weight loss goals and determined that smartphones may offer users an advantage over traditional methods when tracking diet data.

Mothers' responses to babies' crying: Benefiting from and getting over childhood experiences

Posted: 10 Sep 2014 05:38 AM PDT

A study of 259 first-time mothers has found that mothers whose childhood experiences with caregivers were positive, and those who came to terms with negative experiences, respond more sensitively to their own babies' cries. Mothers in the study came from a wide range of racial and socio-economic backgrounds, and were followed from pregnancy until their babies were 6 months old.

Parents' separation found to boost children's behavior problems, but only in high-income families

Posted: 10 Sep 2014 05:38 AM PDT

A study examining a national sample of nearly 4,000 children has found that parents' separation increases children's behavior problems, but only in high income families. The study also found that moving from a single-parent family into a stepparent family improved children's behavior. It goes on to compare the effects of parents' separation, remarriage, or repartnering on children's behavior problems given the child's age.

Gray matter myelin loss strongly related to multiple sclerosis disability, MRI shows

Posted: 10 Sep 2014 05:38 AM PDT

People with multiple sclerosis lose myelin in the gray matter of their brains and the loss is closely correlated with the severity of the disease, according to a new magnetic resonance imaging study. Researchers said the findings could have important applications in clinical trials and treatment monitoring.

Mapping bats could help stop Ebola's spread

Posted: 10 Sep 2014 05:35 AM PDT

In the fight against Ebola, mapping fruit bat habitats could be one important step, says a geoinformatics researcher. Like the Black Death that ravaged medieval Europe, the Ebola virus' progress through remote areas of West Africa is enabled by lack of understanding about the disease, including its causes and transmission.

Living liver donor candidates: Ambivalence is common

Posted: 10 Sep 2014 05:35 AM PDT

Living donors are important to increasing the number of viable grafts for liver transplantation. A new study has found that ambivalence is common among donor candidates. However, providing social support may help minimize the donors' concerns regarding donation.

Pain tolerance levels between men, women are similar

Posted: 10 Sep 2014 05:33 AM PDT

Resilience, a person's ability to overcome adverse circumstances, is the main quality associated with pain tolerance among patients and their adjustment to chronic pain. This is the result of a new study that shows that the effect of gender on this ability is not as significant as originally thought.

Male–male bonds as a key to the evolution of complex social systems

Posted: 10 Sep 2014 05:33 AM PDT

A new study shows tolerance and cooperative ties between male Guinea baboons. Contests, threats, at best ignore one another: The relationships between male mammals are usually described in this or a similar way. The situation is quite different in humans where strong partnerships and close ties between unrelated men are widespread. Ranging from the joint construction of a hut up to the decisions of Executive Board members, there are countless examples that friendships among men bring decisive advantages and are a core ingredient of the complexity of human societies.

When talking about body size, African American women and doctors may be speaking different languages

Posted: 10 Sep 2014 05:30 AM PDT

African American women and their female children have the highest obesity prevalence of any demographic group and are more likely to underestimate their body weight than white women. Yet, according to new research, cultural norms for body size may prevent awareness among many African American women about the potential health benefits they and others in their cultural group might achieve through weight loss.

Combining antibodies, iron nanoparticles and magnets steers stem cells to injured organs

Posted: 10 Sep 2014 05:29 AM PDT

Researchers infused antibody-studded iron nanoparticles into the bloodstream to treat heart attack damage. The combined nanoparticle enabled precise localization of the body's own stem cells to the injured heart muscle. The study addresses a central challenge in stem cell therapeutics: how to achieve targeted interactions between stem cells and injured cells.

Less effective DNA repair process takes over as mice age

Posted: 09 Sep 2014 04:22 PM PDT

One reason for increasing DNA damage in older vertebrates has been uncovered by researchers: the primary repair process begins to fail with increasing age and is replaced by one that is less accurate.

Brain structure could predict risky behavior

Posted: 09 Sep 2014 04:21 PM PDT

Some people avoid risks at all costs, while others will put their wealth, health, and safety at risk without a thought. Researchers have found that the volume of the parietal cortex in the brain could predict where people fall on the risk-taking spectrum.

New payment model for gene therapy needed, experts say

Posted: 09 Sep 2014 04:21 PM PDT

Hoping to encourage sufficient investments by pharmaceutical companies in expensive gene therapies, which often consist of a single treatment, experts outline an alternative payment model.

No convincing evidence to support use of new hip and knee implants, review finds

Posted: 09 Sep 2014 04:20 PM PDT

Several new and widely used hip and knee implants appear to have no clinically relevant improved benefits compared with older, more established implants, according to a review.

Long-term use of pills for anxiety and sleep problems may be linked to Alzheimer's

Posted: 09 Sep 2014 04:20 PM PDT

Taking benzodiazepines -- widely prescribed drugs to treat anxiety and insomnia -- is associated with an increased risk of developing Alzheimer's disease, particularly for long-term users, suggests a new study.

High blood pressure ER visits jumped 25 percent in 2006-11

Posted: 09 Sep 2014 04:20 PM PDT

Emergency room visits for high blood pressure with no known underlying cause, increased by 25 percent in 2006-11. Although more people came to the ER for high blood pressure, the percentage admitted and those who died in the hospital decreased.

Statins may protect against microvascular complications of diabetes

Posted: 09 Sep 2014 04:20 PM PDT

The development of common diabetes complications that can lead to blindness and amputations could be reduced by taking statins, indicates new research. Results showed that people who used statins were less likely to be diagnosed with diabetic neuropathy, less likely to develop diabetic retinopathy, and had a reduced risk of gangrene compared to those who had not received statins.

Frequent cannabis use in adolescence linked with reduced educational attainment, other problems in young adults

Posted: 09 Sep 2014 04:20 PM PDT

Individuals who are daily users of cannabis before age 17 are over 60% less likely to complete high school or obtain a degree compared to those who have never used the drug, new research shows. The large meta-analysis also indicates that daily users of cannabis during adolescence are seven times more likely to attempt suicide, have an 18 times greater chance of cannabis dependence, and are eight times as likely to use other illicit drugs in later life.

Online mindfulness intervention reduces fatigue, negative work-related worry

Posted: 09 Sep 2014 04:19 PM PDT

Brief online mindfulness interventions requiring only two hours of training and practice per week are effective at reducing fatigue and negative work-related rumination and at improving sleep quality, a study concludes. 

Economic study confirms growth in autism

Posted: 09 Sep 2014 04:18 PM PDT

Autism cases aren't up just because mental health professionals are overdiagnosing the disorder. A study by two researchers using market theory shows the disorder really is more prevalent.

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