ScienceDaily Health Headlines
for Tuesday, October 25, 2011
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Could additives in hot dogs affect incidence of colon cancer? (October 25, 2011) -- The addition of ascorbate (vitamin C) or its close relative, erythorbate, and the reduced amount of nitrite added in hot dogs, mandated in 1978, have been accompanied by a steep drop in the death rate from colon cancer, according to new research. ... > full story
Study confirms males and females have at least one thing in common: Upregulating X (October 25, 2011) -- In a new study, scientists present experiments supporting a longstanding hypothesis that explains how males can survive with only one copy of the X chromosome. The finding provides clarity to a hotly debated topic in science and provides biologists with more information to interpret experiments involving genetic measurements in males and females. ... > full story
Exceptional cognitive and physical health in old age leaves immunological fingerprint, study finds (October 25, 2011) -- Exceptional cognitive and physical function in old age leaves a tell-tale immunologic fingerprint, say researchers. Likewise, older adults who have mild impairments bear a distinct immunologic pattern, according to new findings. ... > full story
High fluid intake appears to reduce bladder cancer risk (October 25, 2011) -- Drinking plenty of fluids may provide men with some protection against bladder cancer, according to a study. ... > full story
Gene variant increases risk of kidney disease in African-Americans (October 25, 2011) -- African-Americans with two copies of the APOL1 gene have about a four percent lifetime risk of developing a form of kidney disease, according to scientists. The finding brings scientists closer to understanding why African-Americans are four times more likely to develop kidney failure than whites. ... > full story
'Trading places' most common pattern for couples dealing with male depression (October 25, 2011) -- Researchers have identified three major patterns that emerge among couples dealing with male depression. These can be described as "trading places," "business as usual" and "edgy tensions." ... > full story
Water disinfection byproducts linked to adverse health effects (October 24, 2011) -- Scientists report the first identification of a cellular mechanism linked to the toxicity of a major class of drinking water disinfection byproducts. This study suggests a possible connection to adverse health effects, including neurological diseases such as Alzheimer's. ... > full story
High-dose vitamin D may not be better than low-dose vitamin D in treating multiple sclerosis (October 24, 2011) -- Low vitamin D levels are associated with an increased risk of developing multiple sclerosis (MS), but the first randomized, controlled trial using high-dose vitamin D in MS did not find any added benefit over and above ongoing low-dose vitamin D supplementation, according to a new study. ... > full story
Studying depression: Researchers demonstrate rare animal model (October 24, 2011) -- Scientists have taken a promising step toward creating an animal model for decoding the specific brain circuits involved in depression. By electrically stimulating a brain region central to an animal's primary emotions, the researchers saw rats exhibit a variety of behaviors associated with a depressed, negative mood, or affect. ... > full story
Insomnia could moderately raise your heart attack risk, study suggests (October 24, 2011) -- Having trouble sleeping? If so, you could have a moderately higher risk of having a heart attack, according to new research. In a recent study, the risk of heart attack in people with insomnia ranged from 27 percent to 45 percent greater than for people who rarely experienced trouble sleeping. ... > full story
Dietary patterns may be linked to increased colorectal cancer risk in women (October 24, 2011) -- Researchers may have found a specific dietary pattern linked to levels of C-peptide concentrations that increase a woman's risk for colorectal cancer. ... > full story
Psychologists defend the importance of general abilities (October 24, 2011) -- What makes a great violinist, physicist, or crossword puzzle solver? Are experts born or made? The question has intrigued psychologists since psychology was born -- and the rest of us, too, who may secretly fantasize playing duets with Yo Yo Ma or winning a Nobel Prize in science. ... > full story
'First step' to perfect drug combinations (October 24, 2011) -- Scientists have discovered a way of speeding up the creation of perfect drug combinations, which could help patients recovering from critical health problems such as stroke, heart attacks and cancer. ... > full story
Poor cerebral cortex functions leads to more impulsive behavior (October 24, 2011) -- If the front part of the cerebral cortex is less active then people have less control over their social behavior and automatically follow their inclinations more. The research was the first to make use of magnetic stimulation (TMS) to suppress this part at the front of the prefrontal cortex. During TMS a changing magnetic field on the head temporarily influences the activity of the underlying part of the brain. ... > full story
Mentoring programs: How effective are they? (October 24, 2011) -- Whether it's parents, teachers, coaches, or family friends, there's no question that adults serve as powerful role models for youth as they transition from childhood to adolescence to adulthood. Mentoring programs across the United States have tried to harness the power of positive role models in the hopes that relationships with an adult mentor will help to support kids' socioemotional and cognitive development. But are mentoring programs effective? And do all programs have equally positive effects? ... > full story
Exposure to chemical BPA before birth linked to behavioral, emotional difficulties in girls (October 24, 2011) -- Exposure in the womb to bisphenol A (BPA) -- a chemical used to make plastic containers and other consumer goods -- is associated with behavior and emotional problems in young girls, according to a new study. ... > full story
Children with certain dopamine system gene variants respond better to ADHD drug (October 24, 2011) -- Children with certain dopamine system gene variants have an improved response to methylphenidate -- the most commonly prescribed medication for attention deficit hyperactivity disorder, according to new research. The finding that could help eliminate the guesswork from prescribing effective medications for children with ADHD. ... > full story
Liver parasite lacks key genes for fatty acid synthesis: Genome sequencing of Clonorchis sinensis (October 24, 2011) -- The human liver fluke Clonorchis sinensis affects more than 35 million people in South East Asia and 15 million in China. The complete genome sequence the genome of C. sinensis has provided insight into the biochemical pathways available to the fluke and shows that they are lacking enzymes required for fatty acid biosynthesis. ... > full story
Pre-term babies' exposure to steroids associated with impaired brain growth (October 24, 2011) -- Premature infants exposed after birth to drugs known as glucocorticoids are at increased risk for having impaired growth of the cerebellum, according to new findings. The cerebellum is a region of the brain associated with balance, motor learning, language and behavior. ... > full story
Elevated hormone levels add up to increased breast cancer risk, research finds (October 24, 2011) -- Post-menopausal women with high levels of hormones such as estrogen or testosterone are known to have a higher risk of breast cancer. New research looked at eight different sex and growth hormones and found that the risk of breast cancer increased with the number of elevated hormones -- each additional elevated hormone level increased risk by 16 percent. ... > full story
Whether we know it or not, we can 'see' through one eye at a time (October 24, 2011) -- Although portions of the visible world come in through one eye only, the brain instantaneously takes all that information and creates a coherent image. As far as we know, we "see" with both eyes at once. Now a new study suggests that the brain may know which eye is receiving information -- and can turn around and tell that eye to work even harder. ... > full story
Combination of available tests helps predict Alzheimer's disease risk (October 24, 2011) -- A team of physicians and scientists have described using a combination of broadly available medical tests to produce a much improved predictive picture of the likelihood of impending AD in patients with mild cognitive impairment -- an intermediate stage between the expected cognitive decline of normal aging and the more pronounced decline of dementia. ... > full story
Feed a cold -- starve a tumor (October 24, 2011) -- The condition tuberous sclerosis, due to mutation in one of two tumor suppressor genes, TSC1 or TSC2, causes the growth of non-malignant tumors throughout the body and skin. New research shows that the growth of glucose-dependent TSC-related tumors can be restricted by 2-deoxyglucose, which blocks glucose metabolism, but not by restricting dietary carbohydrates. ... > full story
A passing mood can profoundly alter 'rational decisions' (October 24, 2011) -- Could a passing mood influence your financial portfolio for decades to come? Can impulses you inherited from your cave-man ancestors influence your financial decisions in the modern world in ways that may have lifelong consequences? In a word, yes. Researchers report new evidence that passing mood and deeply embedded human impulses can and do influence us as we make important financial decisions. ... > full story
Probability model examines proportion of women who survive following detection of breast cancer through screening (October 24, 2011) -- A model used to estimate breast cancer survival rates found that the probability that a woman with screen-detected breast cancer will avoid a breast cancer death because of screening mammography may be lower than previously thought, according to a new report. ... > full story
Complexities of DNA repair discovered (October 23, 2011) -- Scientists have discovered that DNA repair in cancer cells is not a one-way street as previously believed. ... > full story
Biomarker detects graft-versus-host-disease in cancer patients after bone marrow transplant (October 23, 2011) -- A team of researchers has found a biomarker they believe can help rapidly identify one of the most serious complications in cancer patients after a bone marrow transplant. ... > full story
Decision-making: What you want vs. how you get it (October 23, 2011) -- New research reveals how we make decisions. Birds choosing between berry bushes and investors trading stocks are faced with the same fundamental challenge -- making optimal choices in an environment featuring varying costs and benefits. ... > full story
Billions of dollars at stake as Canada comes to grips with soaring heart failure costs (October 23, 2011) -- Heart failure (HF) costs are headed for the economic stratosphere, even as researchers come up with simple tests and strategies to bring them back to earth. An assessment of the growing problem and a new initiative to curb costs and increase efficacy in dealing with heart failure patients when they present to emergency departments were the subject of two major studies presented at the Canadian Cardiovascular Congress 2011. ... > full story
First Ebola-like virus native to Europe discovered (October 22, 2011) -- Researchers have discovered a new Ebola-like virus -- Lloviu virus -- in bats from northern Spain. Lloviu virus is the first known filovirus native to Europe. Filoviruses, which include well-known viruses like Ebola and Marburg, are among the deadliest pathogens in humans and non-human primates, and are generally found in East Africa and the Philippines. The findings thus expand the natural geographical distribution of filoviruses. ... > full story
Preventing cancer development inside the cell cycle (October 22, 2011) -- Researchers have identified a cell cycle-regulated mechanism behind the transformation of normal cells into cancerous cells. The study results suggest that inhibition of the CK1 enzyme may be a new therapeutic target for the treatment of cancer cells formed as a result of a malfunction in the cell's mTOR signaling pathway. ... > full story
Simple lifestyle changes can add a decade or more healthy years to the average lifespan, Canadian study shows (October 22, 2011) -- Health prevention strategies to help people achieve their optimal health potential could add a decade or more of healthy years to the average lifespan and save the economy billions of dollars as a result of reduced cardiovascular disease. ... > full story
Burden of osteoporotic fractures increases dramatically in the Middle East and Africa (October 22, 2011) -- Osteoporosis is a serious and growing problem throughout the Middle East and parts of Africa, according to new research. Gathering data from 17 countries in the region as well as Turkey, "The Middle East & Africa Regional Audit" is a landmark report examining epidemiology, costs and burden in individual countries as well as collectively across the region. ... > full story
Blood-pressure-lowering drug after stroke aids recovery, study suggests (October 21, 2011) -- A commonly prescribed blood pressure-lowering medication appears to kick start recovery in the unaffected brain hemisphere after a stroke by boosting blood vessel growth, a new study has found. ... > full story
Are acid-suppressing drugs prescribed too often in infants? (October 21, 2011) -- Frequent spitting up, irritability, and unexplained crying in infants can be very distressing to parents. Pediatricians often prescribe acid-suppressing drugs for these symptoms in an effort to treat infants for gastroesophageal reflux disease (GERD); however, GERD is an uncommon cause of these symptoms in otherwise thriving infants. Experts now caution against the over-diagnosis of GERD and over-prescription of acid-suppressing drugs in infants. ... > full story
Improved living environments can reduce health problems for women and children (October 21, 2011) -- Low-income women with children who moved from high-poverty to lower-poverty neighborhoods experienced notable long-term improvements in aspects of their health; namely, reductions in diabetes and extreme obesity, according to a new study. ... > full story
Can aromatherapy produce harmful indoor air pollutants? (October 21, 2011) -- Spas that offer massage therapy using fragrant essential oils, called aromatherapy, may have elevated levels of potentially harmful indoor air pollutants such as volatile organic compounds (VOCs) and ultrafine particles, according to a new article. ... > full story
Women can self-test for HPV, easily and accurately, study suggests (October 21, 2011) -- A team of German researchers has shown that women can accurately test themselves for human papillomavirus (HPV) infection, the most common cause of cervical cancer. ... > full story
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