ScienceDaily Health Headlines
for Thursday, December 22, 2011
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The biology behind severe PMS (December 21, 2011) -- Sensitivity to allopregnanolone, a hormone that occurs naturally in the body after ovulation and during pregnancy, changes during the course of the menstrual cycle and is different in women with severe PMS compared with women without PMS complaints. ... > full story
Pregnant women advised to stay cool for baby's sake: Australian study (December 21, 2011) -- Medical researchers have found a link between increases in temperature and the incidence of stillbirth and shorter pregnancies. ... > full story
Prejudice comes from a basic human need and way of thinking, new research suggests (December 21, 2011) -- Where does prejudice come from? Not from ideology, say the authors of a new article. Instead, prejudice stems from a deeper psychological need, associated with a particular way of thinking. People who aren't comfortable with ambiguity and want to make quick and firm decisions are also prone to making generalizations about others. ... > full story
How normal cells fuel tumor growth (December 21, 2011) -- A new study has discovered how normal cells in tumors can fuel cancer progression. The study examines what happens when normal cells called fibroblasts in tumors lose an important tumor-suppressor gene. The findings suggest new strategies for controlling tumor growth, they provide insight into the mechanisms that control the co-evolution of cancer cells and their surrounding normal cells in tumors, and they demonstrate how this gene normally suppresses cancer development. ... > full story
How pregnancy changes a woman's brain (December 21, 2011) -- We know a lot about the links between a pregnant mother's health, behavior, and moods and her baby's cognitive and psychological development once it is born. But how does pregnancy change a mother's brain? ... > full story
Cerebrospinal fluid test can pick up Alzheimer's before symptoms appear (December 21, 2011) -- Analysis of the cerebrospinal fluid can detect whether a person has Alzheimer’s disease before symptoms appear. Researchers have studied biomarkers that offer more reliable diagnosis and, in the longer term, the possibility of effective new treatments. ... > full story
Increase in resting heart rate over 10-year period linked with increased risk of heart disease death (December 21, 2011) -- In a study that enrolled nearly 30,000 apparently healthy men and women, those who had an increase in their resting heart rate over a 10-year period had an increased risk of death from all causes and from ischemic heart disease, according to a new study. ... > full story
Synesthesia linked to a hyper-excitable brain (December 21, 2011) -- Hyper-excitability' in regions of the brain may underlie synesthesia, an unusual condition where some people experience a 'blending of the senses', new researchers suggest. ... > full story
Hypertension treatment associated with long-term improvement in life expectancy (December 21, 2011) -- Patients with systolic hypertension who were treated with the diuretic chlorthalidone for 4.5 years as part of a clinical trial had a significantly lower rate of death and a gain in life expectancy free from cardiovascular death about 20 years later compared to patients who received placebo, according to a new study. ... > full story
Gene therapy for ears (December 21, 2011) -- Gene therapy may someday in the future replace the use of implants in deaf people. The carrier for this gene medicine may be derived from shrimp shells. ... > full story
Why humans are so sociable these days (December 21, 2011) -- Humans have evolved to become the most flexible of the primates and being able to live in lots of different social settings sets us apart from non-human primates, suggests new research. ... > full story
Can nerve growth factor gene therapy prevent diabetic heart disease? (December 21, 2011) -- New research has investigated if nerve growth factor gene therapy can prevent diabetic heart failure and small vascular disease in mice. ... > full story
Breastfeeding saved babies in 19th century Montreal (December 21, 2011) -- Breastfeeding increased infant survival rates in 19th -Century Montreal in two major ways, according to new research. Mother's milk protected vulnerable infants from food and water contaminated by fecal bacteria, while breastfeeding postponed the arrival of more siblings and that improved the health of mothers as well as their subsequent children. ... > full story
New device for rapid, mobile detection of brain injury (December 21, 2011) -- Scientists have created a handheld device capable of quickly detecting brain injuries such as hematomas. The prototype for the hematoma detection device is based on the concept of using instrumental motion as a signal in near-infrared imaging. ... > full story
Being told painting is fake changes brain's response to art (December 21, 2011) -- Being told that a work of art is authentic or fake alters the brain's response to the visual content of artwork, academics have found. ... > full story
New candidate vaccine neutralizes all tested strains of malaria parasite (December 20, 2011) -- A new candidate malaria vaccine has the potential to neutralize all strains of the most deadly species of malaria parasite. ... > full story
Blood pressure medicines reduce stroke risk in people with prehypertension, study suggests (December 20, 2011) -- Blood pressure medicines reduced the risk of stroke by 22 percent in people with prehypertension. More than 50 million Americans have an increased risk of stroke due to prehypertension. ... > full story
Are the anxious oblivious? (December 20, 2011) -- Anxious study participants aren't as physiologically sensitive to subtle changes in their environment as less fearful individuals, new research shows. Researchers reason that anxious people could have a deficit in their threat evaluation capacities, which are necessary for effective decision-making and fear regulation. ... > full story
Scientists identify an innate function of vitamin E (December 20, 2011) -- It's rubbed on the skin to reduce signs of aging and consumed by athletes to improve endurance but scientists now have the first evidence of one of vitamin E's normal body functions. The powerful antioxidant found in most foods helps repair tears in the plasma membranes that protect cells from outside forces and screen what enters and exits, new research shows. ... > full story
Mediterranean diet gives longer life, Swedish study suggests (December 20, 2011) -- A Mediterranean diet with large amounts of vegetables and fish gives a longer life, according to Swedish research. A number of studies since the 1950s have shown that a Mediterranean diet, based on a high consumption of fish and vegetables and a low consumption of animal-based products such as meat and milk, leads to better health. ... > full story
The role of Internet pharmacies in prescription drug abuse (December 20, 2011) -- Efforts to halt the growing abuse of prescription drugs must include addressing the availability of these drugs on the Internet and increasing physician awareness of the dangers posed by Internet pharmacies, according to experts. ... > full story
Middle-age blood pressure changes affect lifetime heart disease, stroke risk (December 20, 2011) -- Changes in blood pressure during middle age can affect lifetime risk for heart disease and stroke. People who maintain or reduce their blood pressure to normal levels during middle age have the lowest lifetime risk of cardiovascular disease, while those with an increase in blood pressure have the highest risk. Age and duration of blood pressure changes can help determine individualized lifetime risk for -- and prevention of -- cardiovascular disease. ... > full story
Novel use of drug saves children from deadly E. coli bacteria disease (December 20, 2011) -- A physician saved the life of a child and, by doing so, became the first to find a new use for a drug in the fight against deadly E. coli bacteria. In fact, after a little girl was admitted to hospital to treat severe complications, her physician, running out of options, thought about using the drug eculizumab, which is usually prescribed for another disorder with similar symptoms. Her intuition paid off and the little girl survived. The dramatic improvement experienced by the young patient and two others is explained in a new article. ... > full story
New test to indicate likely spread or recurrence of breast cancer (December 20, 2011) -- A student has developed a potential breakthrough test for predicting the likelihood of the spread or return of breast cancer. ... > full story
Gender bias of prospective parents revealed (December 20, 2011) -- A new study has found that when people think about having children, men want boys and women want girls. ... > full story
Snipping key nerves may help life threatening heart rhythms, study suggests (December 20, 2011) -- According to a new study, cutting key nerves to the heart that control the adrenaline-driven "flight or fight" stress response may help alleviate life-threatening ventricular arrhythmias. This is one of the first studies to assess the impact of performing this type of surgery on both sides of the heart to control arrhythmias, called a bilateral cardiac sympathetic denervation. ... > full story
Dodging the cognitive hit of early-life seizures (December 20, 2011) -- About half of newborns who have seizures go on to have long-term intellectual and memory deficits and cognitive disorders such as autism, but why this occurs has been unknown.Researchers now detail how early-life seizures disrupt normal brain development, and show in a rat model that it might be possible to reverse this pathology by giving certain drugs soon after the seizure. ... > full story
Teens choose water when calorie count of sugary beverages is easier to understand (December 20, 2011) -- Providing easily understandable caloric information, specifically in the form of a physical activity equivalent, may reduce the likelihood of sugar-sweetened beverage purchases among adolescents by as much as half. ... > full story
Cornea gene discovery reveals why humans see clearly (December 19, 2011) -- A new study has identified a gene that plays a major role in maintaining clarity of the cornea in humans and mice -- and could possibly be used as gene therapy to treat diseases that cause blindness. ... > full story
Molecular markers can predict spread of cancer, guide treatment (December 19, 2011) -- Molecular markers found in cancer cells that have spread from a primary tumor to a limited number of distant sites can help physicians predict which patients with metastatic cancer will benefit from targeted radiation therapy. If cells from metastatic tumors have high levels of one type of microRNA then aggressive local treatment will not help. But if the cells have lower levels of that marker, then focused treatment could be effective, even curative. ... > full story
One trait has huge impact on whether alcohol makes you aggressive (December 19, 2011) -- Drinking enough alcohol to become intoxicated increases aggression significantly in people who have one particular personality trait, according to new research. But people without that trait don't get any more aggressive when drunk than they would when they're sober. That trait is the ability to consider the future consequences of current actions. ... > full story
Tissue structure delays cancer development (December 19, 2011) -- Cancer growth normally follows a lengthy period of development. Over the course of time, genetic mutations often accumulate in cells, leading first to pre-cancerous conditions and ultimately to tumor growth. Using a mathematical model, scientists have now shown that spatial tissue structure, such as that found in the colon, slows down the accumulation of genetic mutations, thereby delaying the onset of cancer. ... > full story
Walking skills program improves physical function following hip replacement surgery (December 19, 2011) -- Researchers in Norway report that patients who receive walking skills training following total hip arthroplasty for osteoarthritis show improved physical function. The physical therapy program displayed a positive effect on walking distance and stair climbing which continued 12 months following hip replacement surgery. ... > full story
Babies remember even as they seem to forget (December 19, 2011) -- Fifteen years ago, textbooks on human development stated that babies of six months of age or younger had no sense of "object permanence" -- the psychological term that describes an infant's belief that an object still exists even when it is out of sight. That meant that if mom or dad wasn't in the same room with junior, junior didn't have the sense that his parents were still in the world. These days, psychologists know that isn't true: for young babies, out of sight doesn't automatically mean out of mind. But how much do babies remember about the world around them, and what details do their brains need to absorb in order to help them keep track of those things? Babies may not remember what they saw, but they remember that they saw something. ... > full story
First aid after tick bites (December 19, 2011) -- They come out in the spring, and each year they spread further – the ticks. Thirty percent of them transmit borrelia pathogens, the causative agent of Lyme borreliosis that can damage joints and organs. The disease often goes undetected. In the future, a new type of gel is intended to prevent an infection – if applied after a tick bite. ... > full story
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