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Thursday, July 31, 2014

ScienceDaily: Top Health News

ScienceDaily: Top Health News


Supportive moms and sisters boost female baboon's rank

Posted: 30 Jul 2014 09:02 AM PDT

A study of dominance in female baboons suggests that the route to a higher rank is to maintain close ties with mom, and to have lots of supportive sisters.

Money talks when it comes to acceptability of 'sin' companies, study reveals

Posted: 30 Jul 2014 09:02 AM PDT

Companies who make their money in the 'sin' industries such as the tobacco, alcohol and gaming industries typically receive less attention from institutional investors and financial analysts. But new research shows social norms and attitudes towards these types of businesses are subject to compromise when their share price looks to be on the rise.

Dimly lit working environments: Correcting body clock is possible

Posted: 30 Jul 2014 09:02 AM PDT

Researchers have, for the first time, conducted a study under real conditions on the body clocks of members of an international polar research station. The researchers have shown that a particular kind of artificial light is capable of ensuring that their biological rhythms are correctly synchronized despite the absence of sunlight.

Naltrexone may be effective in diminishing impulse control disorders in Parkinson's disease patients

Posted: 30 Jul 2014 09:01 AM PDT

Parkinson's disease (PD) patients may confront a common but largely unrecognized challenge: the occurrence of impulse control disorders (ICDs) such as compulsive gambling, sexual behavior, eating, or spending. A team of investigators conducted a pilot study and found that the opioid antagonist naltrexone may be an effective treatment for diminishing ICD symptoms in PD patients.

Many depressed preschoolers still suffer in later school years

Posted: 30 Jul 2014 09:01 AM PDT

Children diagnosed with depression as preschoolers are likely to suffer from depression as school-age children and young adolescents, new research shows. The investigators followed 246 children, now ages 9 to 12, who were enrolled in the study as preschoolers when they were 3 to 5 years old. The children and their primary caregivers participated in up to six annual and four semiannual assessments. They were screened using a tool called the Preschool Feelings Checklist and evaluated using an age-appropriate diagnostic interview.

Income a major driver of avoidable hospitalizations across New Jersey

Posted: 30 Jul 2014 07:41 AM PDT

The household income of its residents is the most important factor in whether a community has high or low rates of avoidable hospital visits -- conditions that could be better managed in a doctor's office or other health care settings if treated at an early stage, according to a report.

Exploring 3-D printing to make organs for transplants

Posted: 30 Jul 2014 07:41 AM PDT

Printing whole new organs for transplants sounds like something out of a sci-fi movie, but the real-life budding technology could one day make actual kidneys, livers, hearts and other organs for patients who desperately need them. Scientists are reporting new understanding about the dynamics of 3-D bioprinting that takes them a step closer to realizing their goal of making working tissues and organs on-demand.

Laughter is the best medicine? The emotional appeal of stand-up comedy

Posted: 30 Jul 2014 07:40 AM PDT

Comics taking to the stage should take note: how much of a hit they are with their audiences won't be down to just their jokes. The link between humor and emotion plays a large part in how well an audience connects with a comedian, and vice versa, according to new research.

Breastfeeding: Do celebrity ambassadors help the ordinary woman?

Posted: 30 Jul 2014 07:40 AM PDT

Breasts are the strongest symbol of female sexuality and are abundant in the media, on magazines, in adverts and in film. Celebrity breasts are depicted as objects of sexual desire and as a model for everyday women to aspire to. Broadcast images of breastfeeding however are scarce and elicit controversy and even revulsion.

Sugar mimics guide stem cells toward neural fate

Posted: 30 Jul 2014 06:40 AM PDT

Many growth factors that influence the fate of embryonic stem cells must bind to sugars attached to specific receptors on the surface of the cell to work. Because the sugars are difficult to manipulate, biochemists created synthetic stand ins that helped to identify substructures recognized by a growth factor involved in neural development.

Numerical learning disability: Dyscalculia linked to difficulties in reading and spelling

Posted: 30 Jul 2014 06:38 AM PDT

Between three and six percent of schoolchildren suffer from an arithmetic-related learning disability. Researchers now show that these children are also more likely to exhibit deficits in reading and spelling than had been previously suspected.

High frequency of potential entrapment gaps in hospital beds

Posted: 30 Jul 2014 06:38 AM PDT

A survey of beds within a large teaching hospital in Ireland has shown than many of them did not comply with dimensional standards put in place to minimize the risk of entrapment. The report therefore emphasizes the need for careful selection of patients for whom bedrails are to be used, as well as the need for monitoring and maintenance of hospital bed systems.

Ablation increases survival for adults with atrial fibrillation

Posted: 30 Jul 2014 06:35 AM PDT

Easing heart palpitations is one benefit of catheter ablation. A longer life span is another. Study shows 60 drop in cardiovascular mortality after ablation for atrial fibrillation. More than 4 million people have atrial fibrillation, an age-related heart rhythm disorder that can cause a fluttering sensation in the chest and impair the heart's ability to pump blood.

Parenting skills improve in ADHD parents with medication

Posted: 30 Jul 2014 06:35 AM PDT

Parenting skills of adults with ADHD improve when their ADHD is treated with medication, according to researchers. At least 25 percent of clinic-referred children with attention deficit/hyperactivity disorder have a parent with ADHD. At least 25 percent of clinic-referred children with attention deficit/hyperactivity disorder have a parent with ADHD.

Brain response to appetizing food cues varies among obese people

Posted: 30 Jul 2014 06:35 AM PDT

People who have the most common genetic mutation linked to obesity respond differently to pictures of appetizing foods than overweight or obese people who do not have the genetic mutation, according to a new study. More than one-third of adults are obese. Obesity typically results from a combination of eating too much, getting too little physical activity and genetics.

Teen insomnia linked with depression, anxiety

Posted: 30 Jul 2014 06:35 AM PDT

A study of high school students has shed new light on the links between insomnia-related mental health conditions among teens. "People with insomnia find it difficult to fall asleep or stay asleep for as long as they need to. This is a widespread sleep disorder among the general public, and in most countries about 11% of teens aged 13-16 years experience insomnia at some stage," one researcher said.

Soy may help women's hearts if they start early

Posted: 30 Jul 2014 01:34 AM PDT

A diet rich in soy may help feminine hearts, but timing matters, finds a new study. "This study underscores how important it is for women to get into the best cardiovascular shape they can before menopause. The healthy habits they start then will carry them through the years to come," says one expert.

Acupuncture provides significant quality of life improvements among breast cancer patients taking drugs to prevent recurrence, study shows

Posted: 30 Jul 2014 01:34 AM PDT

Use of electroacupuncture (EA) – a form of acupuncture where a small electric current is passed between pairs of acupuncture needles – produces significant improvements in fatigue, anxiety and depression in as little as eight weeks for early stage breast cancer patients experiencing joint pain related to the use of aromatase inhibitors (AIs) to treat breast cancer. The study is the first demonstration of EA's efficacy for both joint pain relief, as well as these other common symptoms.

A blood test for suicide risk? Alterations to a single gene could predict risk of suicide attempt

Posted: 30 Jul 2014 01:34 AM PDT

Researchers say they have discovered a chemical alteration in a single human gene linked to stress reactions that, if confirmed in larger studies, could give doctors a simple blood test to reliably predict a person's risk of attempting suicide.

Research shows impact of soft drinks in meal planning

Posted: 29 Jul 2014 07:49 PM PDT

New research has looked into whether we take liquid calories into account when planning meals. Participants completed a computer-based match-fullness task which assessed the expected satiation of meals that included either a calorific drink, a non-calorific drink, or a snack with the same energy content as the calorific drink. The researchers also explored the contribution of carbonation on expected fullness.

Problem drinking in midlife doubles chance of memory problems in later life

Posted: 29 Jul 2014 07:49 PM PDT

Middle-aged adults with a history of problem drinking are more than twice as likely to suffer from severe memory impairment in later life, research shows. The study highlights the hitherto largely unknown link between harmful patterns of alcohol consumption and problems with memory later in life -- problems which may place people at a high risk of developing dementia.

Children whose parents spend more time cooking choose healthier foods later

Posted: 29 Jul 2014 07:49 PM PDT

New research suggests that the amount time parents spend on food preparation at home influences children's food intake decisions made in the laboratory without parental supervision.

Striatal dopamine transporter binding correlates with body composition and visual attention bias for food cues in healthy young men

Posted: 29 Jul 2014 07:49 PM PDT

Scientists have described a way that brain chemistry may make some people notice food more easily, which can tempt overeating even in people who are not overweight.

Dieting young may lead to poor health outcomes later: Trends in dieting strategies in young adult women from 1982 to 2012

Posted: 29 Jul 2014 07:49 PM PDT

The younger a woman is when she goes on her first diet, the more likely she is to experience several negative health outcomes later in life.

Drinking sugar-sweetened beverages during adolescence impairs memory, animal study suggests

Posted: 29 Jul 2014 07:49 PM PDT

Daily consumption of beverages sweetened with high-fructose corn syrup or sucrose can impair the ability to learn and remember information, particularly when consumption occurs during adolescence, a study done in rats suggests.

Blood sugar levels closely linked to how our brains respond to the sight of food, twin study finds

Posted: 29 Jul 2014 07:49 PM PDT

Our brain's response to the sight of food appears to be driven more by how low our blood sugar level is at the moment than our upbringing or genetics.

Maternal obesity modulates offspring microflora composition and gastrointestinal functions, animal study shows

Posted: 29 Jul 2014 07:48 PM PDT

Maternal obesity leads to marked changes in the offspring's gastrointestinal microflora composition and gastrointestinal function. This study suggests there are non-genetic factors that could be passed from a mother to offspring to increase the susceptibility to obesity.

Time of arrival at hospital impacts time to treatment and survival of heart attack patients

Posted: 29 Jul 2014 01:47 PM PDT

Study shows heart attack patients who arrive at the hospital during weeknights, weekends and holidays have a 13 percent increased risk of dying compared with those arriving during regular business hours. On average, time to receive angioplasty was 16 minutes faster for people who arrived during business hours. Time of day was not associated with delays in aspirin administration, imaging tests or intravenous clot-busting medications. Compared to previous reports, the researchers observed lower in-hospital deaths and improved door-to-needle times.

Vaccine against tick-transmitted disease under development

Posted: 29 Jul 2014 12:29 PM PDT

An important advancement toward developing a vaccine against the debilitating and potentially deadly tick-transmitted disease, human granulocytic anaplasmosis has been made by scientists. Successful vaccine development hinges on knowing what to target to prevent disease, and the research team has identified three such proteins on the surface of the HGA agent.

Making cancer glow to improve surgical outcomes

Posted: 29 Jul 2014 12:29 PM PDT

The best way to cure most cases of cancer is to surgically remove the tumor. The Achilles heel of this approach, however, is that the surgeon may fail to extract the entire tumor, leading to a local recurrence. With a new technique, researchers have established a new strategy to help surgeons see the entire tumor in the patient, increasing the likelihood of a positive outcome.

Urbanization of rural Africa associated with increased risk of heart disease and diabetes

Posted: 29 Jul 2014 11:20 AM PDT

The increasing urbanization of rural areas in sub-Saharan Africa could lead to an explosion in incidences of heart disease and diabetes, according to a new study carried out in Uganda that found that even small changes towards more urban lifestyles was associated with increased risk of cardiovascular and metabolic diseases.

$15 billion annual public funding system for doctor training needs overhaul, say experts

Posted: 29 Jul 2014 09:38 AM PDT

The US should significantly reform the federal system for financing physician training and residency programs to ensure that the public's $15 billion annual investment is producing the doctors that the nation needs, says a new report.

Research may explain how foremost anticancer 'guardian' protein learned to switch sides

Posted: 29 Jul 2014 09:38 AM PDT

A cellular program that evolved over eons to heal wounds may have been hijacked by mutant p53 proteins to enable cancers to spread out of control. This protein normally comes to the fore when healthy cells sense damage to their DNA caused by stress, such as exposure to toxic chemicals or intense exposure to the sun's UV rays. If the damage is severe, p53 can cause a cell to commit preprogrammed cell-death, or apoptosis. Mutant versions of p53 that no longer perform this vital function, on the other hand, are enablers of many different cancers.

Congenital heart disease specialists develop nonsurgical technique to correct birth defects in premature infants

Posted: 29 Jul 2014 07:10 AM PDT

A new technique for repairing the most common cardiac birth defect in newborns, commonly referred to as "a hole in the heart," has been used successfully to mend the condition in six premature infants without subjecting the tiny patients to open-heart surgery.

Vaccine website could increase uptake

Posted: 29 Jul 2014 06:32 AM PDT

Giving parents access to a dedicated website on the measles, mumps and rubella vaccine is the most cost-effective way to increase uptake, say experts. "A website is a simple solution but one that could make a real difference to vaccination uptake. This is a much more convenient way for parents to get information they need about the safety of the MMR vaccine for their children," one expert said.

Herpes remains active even when no symptoms appear

Posted: 29 Jul 2014 06:31 AM PDT

A large percentage of people carry the herpes virus -- and although it mostly seems dormant, virologists have found our cells are having to fight the virus constantly. Herpes Simplex Type 1 is a virus that causes cold sores. It remains in the body's nervous system indefinitely after infection.

New method provides researchers with efficient tool for tagging proteins

Posted: 29 Jul 2014 06:31 AM PDT

With a new method, researchers use a piece of DNA engineered to bind to metal ions. Using this 'control stick,' they direct another piece of DNA to a metal binding site on the protein. The new method makes it possible to direct the tagging of proteins with DNA to a particular site on the protein, without genetically modifying the protein beforehand. In other words, it is possible to tag natural proteins, including antibodies.

Determine patient preferences by means of conjoint analysis

Posted: 29 Jul 2014 06:31 AM PDT

Conjoint Analysis has been tested by scientists, and is in principle suitable to find out how important different treatment goals are for patients, they conclude. Following the Analytic Hierarchy Process (AHP), CA is the second method tested by the Institute together with external experts.

New gadget helps vision-impaired to read graphs

Posted: 29 Jul 2014 06:31 AM PDT

People who are blind can now read more than just words, such as graphs and graphics, following the development of an affordable digital reading system by researchers.

Mysterious esophagus disease is autoimmune after all

Posted: 29 Jul 2014 04:36 AM PDT

Achalasia is a rare disease – it affects 1 in 100,000 people – characterized by a loss of nerve cells in the esophageal wall. While its cause remains unknown, a new study confirms for the first time that achalasia is autoimmune in origin.

First controlled malaria infection trial in Africa paves way for drug and vaccine development

Posted: 28 Jul 2014 06:19 PM PDT

An international research team today reports the first-ever clinical trial demonstrating controlled malaria infection in an African nation in the modern era. The study represents a significant milestone in the search for new malaria drugs and vaccines.

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