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Allergy meds can pose driving hazard, FDA says

Allergy medications may help you get through the spring and summer months, but it's important to know that the drugs could affect your ability to drive, the Food and Drug Administration is reminding consumers. These medications, which contain antihistamines, can sometimes cause drowsiness and slower reaction times, the FDA said. Consumers should read the drug facts label on their medication to see whether drowsiness is a side effect. If an allergy medication causes drowsiness, people need to be cautious about deciding to drive or operate machinery, the FDA says. People should avoid using alcohol, sedatives (sleep medications) and tranquilizers when taking allergy medication because these substances may increase drowsiness. [See Will Allergies Be Worse in 2013?] Those who switch to a new antihistamine drug should not assume they can take the same dose as they did with the older drug, the FDA says. Different allergy medications may be dosed differently, and people may need to alter the dose they take. People should not take more than the recommended dose. If the correct dosage isnt providing you the relief you expect, dont simply keep taking more and more of that product, FDA pharmacist Ayana Rowley said in a statement. Instead, people should consult a health care professional, Rowley said. Allergy sufferers should be aware that some allergy medications take longer to work than others. In addition, the drowsiness you feel after taking the medication may last some time, including into the next day, the FDA said. Copyright 2013 LiveScience, a TechMediaNetwork company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.source : http://www.foxnews.com/health/2013/05/29/allergy-meds-can-pose-driving-hazard-fda-says/

Pregnancy hormone may predict postpartum depression risk

Levels of a stress hormone released by the placenta could predict a woman's risk of developing postpartum depression, new research suggests. The new findings suggest that measuring levels of the hormone, called placental corticotropin-releasing hormone (pCRH), could one day help identify women who are prone to postpartum depression before they give birth. “Women who show high levels of this hormone prenatally are at increased risk,” said study co-author Laura Glynn, a psychologist at Chapman University in Orange, Calif. The study showed an association, not a cause-and-effect relationship, between pCRH levels and postpartum depression. Further research is needed to determine exactly how this link might work. The study was presented May 21 at the annual meeting of the American Psychiatric Association, and has not been published in a peer-reviewed journal. Placental clock The placenta, which lies within the uterus and provides nutrition to the baby, produces varying amounts of the hormone pCRH over the course of pregnancy, with a sharp rise shortly before birth. Scientists believe the hormone plays a role in timing when women deliver their babies. “It's been called the placental clock,” Glynn told LiveScience. Women who deliver prematurely, for instance, tend to show higher levels of pCRH than those who deliver at term. Depression link To understand how pCRH levels may be related to postpartum depression, Glynn and her colleagues measured hormone levels in the blood of 170 pregnant women at 15, 19, 25, 31 and 36 weeks of gestation. (Full-term pregnancies last 40 weeks.) The researchers also assessed the women's levels of depression at three and six months after giving birth. Women with high levels of pCRH around the middle of their pregnancies (at 25 weeks) were more likely to be depressed three months after giving birth, compared with women whose levels were lower at midpregnancy. The researchers didn't find a link between pCRH levels and depression at the six-month mark. Proactive treatment The findings could help identify women who are at risk of postpartum depression before they give birth so that health care professionals could intervene early. It can be hard for women struggling with new motherhood and depression to get help, but identifying at-risk women in the earlier stages of their pregnancies could make it easier for doctors to help. Its especially important to identify the risk early on because postpartum depression can have lasting effects. “Not only is mom suffering, but her suffering is going to influence the development of the infant in a pretty profound way,” Glynn said. Glynn isn't exactly sure why high pCRH levels might predict the risk of depression, but she said it could be because some women's hormonal systems take longer to return to their prepregnant states. The findings also suggest that postpartum depression that appears soon after birth may have different causes than depression that shows up later on. Copyright 2013 LiveScience, a TechMediaNetwork company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.source : http://www.foxnews.com/health/2013/05/24/pregnancy-hormone-may-predict-postpartum-depression-risk/

Simple vision test may predict IQ

A simple visual test is surprisingly accurate at predicting IQ, according to new research. The study, published May 23 in the journal Current Biology, found that people's ability to efficiently filter out visual information in the background and focus on the foreground is strongly linked to IQ. The findings could help scientists identify the brain processes responsible for intelligence. That doesn't mean snappy, efficient visual processing leads to smarts, said study co-author Duje Tadin, a neuroscientist at the University of Rochester in New York. Instead, common brain processes may underlie both intelligence and efficient visual processing. IQ hunting Since the 1800s, the forefathers of IQ testing, including Sir Francis Galton (who also pioneered the science of fingerprinting), suspected that highly intelligent people also have supersensory discrimination. But studies in the subsequent decades have found only a modest connection between IQ-test scores and peoples ability to quickly or accurately spot motion in images. Tadin and his colleagues were studying a separate question on visual perception in 12 participants when they found something striking: IQ seemed to be correlated strongly with performance on a visual task. The test asked users to spot the direction of motion on a series of black-and-white stripes on a screen. Sometimes, the lines formed inside a small central circle, and other times, they were large stripes that took up the entire screen. Participants also completed a short IQ test. [Watch Video of Motion and Test Your Smarts] The team noticed that people with higher IQs were good at spotting motion in the small circles, but terrible at detecting motion in the larger black-and-white stripes. Because they had looked at so few people, Tadin and his colleagues wondered if their results were a fluke. They repeated the experiment with 53 people, who also took a full IQ test. The ability to visually filter the motion strongly predicted IQ in fact, motion suppression (the ability to focus on the action and ignore background movements) was as predictive of total IQ as individual subsections of the IQ test itself. Relevant information As people walk, the background scenery is always changing, so efficient brains may be better at filtering out this irrelevant visual information. And that efficiency could be operating across a wide range of tasks, Tadin said. “What happens in brains of high-IQ people is, they're automatically processing motion of small moving objects efficiently, whereas they're suppressing the background,” Tadin said. The findings reshape the conventional view that quick thinking leads to smarts. “Speedy processing does matter, but it's only half the story. It's how you filter out things that are less relevant and focus your speedy resources on what is important,” Tadin said. Big variation The study reveals new insights into brain efficiency and smarts, said Kevin McGrew, director of the Institute for Applied Psychometrics and owner of www.themindhub.com. Even though the link between IQ and visual filtering was very strong, IQ tests won't be replaced by motion tracking anytime soon, said McGrew, who was not involved in the study. “Their task accounts for or explains about 50 percent of the IQ scores,” McGrew told LiveScience. “That is impressive in psychology, but it still means there is 50 percent of the scores that they're not explaining.” Copyright 2013 LiveScience, a TechMediaNetwork company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.source : http://www.foxnews.com/health/2013/05/24/simple-vision-test-predicts-iq/

H7N9 flu study hints at limited human-to-human spread

It's likely that the new H7N9 bird flu virus can spread through the air on a limited basis, according to a new study that looked at how the virus spreads in animals. The study also provides more evidence that the virus can spread between people in close contact. However, it's unlikely the virus could cause a pandemic, unless it undergoes genetic changes that allow it to spread more efficiently between people, experts say. According to the World Health Organization, as of May 17, health officials knew of 131 people in China who had fallen ill with the H7N9 virus , including 36 who died. Most of these cases about 75 percent were people who had direct contact with poultry. In a few cases, people in the same family caught the disease, suggesting that the virus spreads between people in close contact. However, there is no evidence of sustained human-to-human transmission, WHO says. Because many factors can influence whether a person falls ill with flu, including their overall health, researchers like to study flu viruses in animals, under controlled conditions, to better understand how they spread, said study researcher Dr. Richard Webby, a bird-flu expert at St. Jude Children's Research Hospital in Memphis, Tenn. In the new study, researchers infected six ferrets with the H7N9 virus, all of whom developed flu symptoms. Ferrets are considered a good model to study human flu transmission because efficient spread of the flu in ferrets tends to predict efficient spread in people. Several of the infected ferrets were placed in the same cage as uninfected ferrets. In addition, several uninfected ferrets were placed in cages a short distance away from uninfected ferrets to see if the virus could spread through the air. All of the uninfected ferrets who were in the same cage as the infected ferrets caught the virus, suggesting the virus can spread through direct contact. The flu virus also spread through the air, but less efficiently. Just one of three ferrets caged a short distance from infected ferrets caught the virus. The findings mostly mirror what health officials have seen in people, Webby said. For sustained person-to-person transmission to occur, the virus would likely have to transmit efficiently by both the airborne and direct contact routes, Webby said. Because H7N9 doesn't transmit very well through the air, it “doesn't look like it has the capacity to [cause] a pandemic,” unless the virus changes, Webby said. H7N9 appears to be more infectious than the H5N1 bird flu virus, Webby said. When researchers infect ferrets with H5N1, they usually do not see transmission through airborne or direct contact, Webby said. One bit of good news is that H7N9 does not appear to spread between pigs. In the study, pigs did not catch H7N9 from each other, either through the air or direct contact. Transmission between pigs would be concerning because it would provide more opportunities for the H7N9 virus to evolve and transmit to people that way too, Webby said. Based on the new results, pigs are unlikely to be major players in maintaining of the virus,Webby said. However, Webby noted the study tested just one strain of H7N9, and there are other strains out there that may act differently. The study, conducted by researchers at the University of Hong Kong and others, is published May 23 in the journal Science. Copyright 2013 LiveScience, a TechMediaNetwork company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.source : http://www.foxnews.com/health/2013/05/24/h7n-flu-study-hints-at-how-it-may-spread-in-people/

Dogs bring swarm of bacteria into your home

Your loyal pooch may be bringing a whole world of bacteria into your home but don't panic. Research suggests that exposure to a wide variety of microbes may be good for us. A new study reveals that homes with dogs have greater bacterial diversity than canine-free dwellings. Dog-related diversity is particularly high on television screens and pillowcases, the researchers found. “When you bring a dog into your house, you are not just bringing a dog, you are also introducing a suite of dog-associated [microbe] taxa directly into your home environment, some of which may have direct or indirect effects on human health,” the researchers wrote today (May 22) in the journal PLOS ONE. [5 Wacky Things That Are Good For You] Microbes around us The microbes in our environment are the subject of increased interest by scientists, thanks to studies revealing how intertwined human lives are with those of the single-celled. Skin microbes, for example, may be key for warding off disease. And the load of microbes living in the human gut may influence everything from immunity to obesity. North Carolina State University biologist Rob Dunn and his colleagues wanted to step back from the body to better understand the microbes in our environment at large. They gave 40 families a home-sampling kit and asked them to swab down nine locations in their houses: a kitchen cutting board, a kitchen counter, a refrigerator shelf, a toilet seat, a pillowcase, a television screen, the main door's exterior handle and the upper trim on both an interior door and on an exterior door. The researchers then examined the microbial DNA from the swabs to detect different families of microscopic tenants living on these surfaces. All told, the 40 homes harbored 7,726 different types of bacteria. The most common were Proteobacteria, Firmicutes and Actinobacteria, all families containing a wide range of species. Types of bacteria tended to differ by location: Kitchen environments (cutting boards, counters and shelves) had similar colonies from home to home, as did frequently touched surfaces (toilet seats, pillowcases, door handles) and rarely cleaned surfaces (door trims and television screens). “This makes sense,” Dunn said in a statement. “Humans have been living in houses for thousands of years, which is sufficient time for organisms to adapt to living in particular parts of houses. We know, for example, that there is a species that only lives in hot-water heaters. We deposit these bacterial hitchhikers in different ways in different places, and they thrive or fail depending on their adaptations.” Bacteria related to human skin were found most frequently on pillowcases and toilet seats as were bacteria commonly found in human feces. Bacteria from leaves and produce were found most often on door trims and also on kitchen surfaces. Bacteria from the soil were found across the home, but were most common on the exterior door trim, the researchers found. Doggie diversity Dunn and his colleagues next looked for variables that would alter bacterial communities from home to home, such as the presence of cats, children, carpet and other factors. The only one they found that made any difference was whether or not the family had a pet dog. Pillowcases and TV screens of dog-owning families had 42 percent and 52 percent more microbial groups, respectively, than pillowcases and TV screens of non-dog-owning families. This extra diversity, unsurprisingly, was made up largely of bacteria known to live on dog fur. (Other factors, such as the level of humidity in a home, could also influence microbe diversity, the researchers wrote, but they were unable to measure those factors in this study.) Dog owners shouldn't ship Fido off to the countryside for fear of nasty bacteria, though. In fact, the family pet may be a boon to health. Previous studies have found that pregnant women who live in homes with dogs are less likely to have children with allergies. Scientists speculate that the reason might be an exposure to greater numbers of microbes that keeps the immune system from turning on the body. “Our study provides evidence to robustly support this assumption,” Dunn and his colleagues wrote. The researchers are planning to process samples from a total of 1,300 homes across the United States to look for geographic differences in microbial roommates. Copyright 2013 LiveScience, a TechMediaNetwork company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.source : http://www.foxnews.com/health/2013/05/23/dogs-bring-swarm-bacteria-into-your-home/

Inexpensive, accurate way to detect prostate cancer: At-home urine tests

After more than a decade of work, UC Irvine chemists have created a way to clearly identify clinically usable markers for prostate cancer in urine, meaning that the disease could be detected far sooner, with greater accuracy and at dramatically lower cost. The same technology could potentially be used for bladder and multiple myeloma cancers, which also shed identifiable markers in urine. "Our goal is a device the size of a home pregnancy test priced around $10…

Sleep-deprived teen drivers more likely to crash

Too little sleep increases the risk of car crashes for young drivers, a new study confirms. In the study, drivers ages 17 to 24 who reported sleeping six or fewer hours per night were about 20 percent more likely to be involved in a car crash over a two-year period, compared with those who slept more than six hours a night. Car crashes among the sleep-deprived were more likely to occur between 8 p.m. and 6 a.m. than at other hours. The findings held even after the researchers took into account factors that affect people's risk of a car crash, such as age, the number of driving hours per week, risky driving behavior such as speeding and a history of car crashes. Sleep deprivation is known to be a risk factor for car crashes it's estimated that drowsy driving is responsible for 20 percent of all car crashes in the United States, the researchers say. However, most studies to date have not focused on young people. Young drivers should be a focus of education efforts to prevent drowsy driving “because this group experiences more impairment in alertness, mood and physical performance compared with older age groups with similar sleep deprivation,” the researchers said. The new study involved more than 19,000 young, newly licensed drivers living in New South Wales, Australia, who answered questions about their sleep habits, including how many hours they slept on weeknights and weekends. Researchers then tracked the participants for two years, and obtained police reports to document car crashes. Among drivers who reported getting six or fewer hours of sleep a night, 9.4 percent were involved in a crash, compared with 6.9 percent of those who reported more than six hours of sleep a night. The new findings “may help increase awareness of the impact of reduced sleep hours on crash risk and highlight subgroups of young drivers and times of day for targeted intervention,” the researchers write in the May 20 issue of the journal JAMA Pediatrics. The researchers noted that participants were only asked about their sleep habits once during the study, and the exact number of hours participants slept on the day before they were involved in a crash is not known. Follow Rachael Rettner @RachaelRettner. Follow MyHealthNewsDaily @MyHealth_MHND, Facebook & Google+. Originally published on LiveScience.Copyright 2013 LiveScience, a TechMediaNetwork company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.source : http://www.foxnews.com/health/2013/05/21/sleep-deprived-teen-drivers-more-likely-to-crash/

Not my kid: Most parents unaware teen is using study drugs

Many parents are not aware that their teenage children abuse “study drugs,” a new poll suggests. In the poll, just 1 percent of parents said their teenage children had taken drugs such as Adderall or Ritalin without a prescription. That is much lower than the percentage of teens that surveys suggest are using the drugs. For example, a 2012 study of high schoolers found that about 10 percent of sophomores and 12 percent of seniors said they had used the drugs without a prescription. The new finding highlights the growing issue of stimulant drug abuse, or when teens take stimulant medication (or “study drugs”) to help them study for a test or stay awake to do homework. Such medications are prescribed for attention deficit hyperactivity disorder (ADHD). Teens without the condition may fake symptoms in order to get a prescription, or obtain the drugs from friends. The new findings, from the C.S. Mott Children's Hospital National Poll on Children's Health, examined parents' awareness of the issue, surveying parents of U.S. children ages 13 to 17. About 11 percent of parents said their teens had been prescribed stimulant medication for ADHD. Among parents of children who were not prescribed ADHD medications, 1 percent said their teens had used these drugs for study purposes. About 4 percent said they didn't know if their teen had abused these drugs, and 95 percent said their teens had never abused the drugs. This disconnect between teen drug abuse and parents' awareness of drug abuse may be in part due to the fact that study drugs have more subtle effects than drugs such as heroin and cocaine, allowing teens to more easily hide their drug use, the researchers said. About half of parents polled said they were very concerned about teens in their communities abusing study drugs. And more than three-quarters supported school policies aimed at stopping this type of drug abuse, such as rules that would require children with prescription ADHD medications to keep the pills in a secure place like the school nurse's office. The findings “underscore the need for greater communication among public health officials, schools, parents, and teens regarding this issue,” the researchers said. Follow Rachael Rettner @RachaelRettner. Follow MyHealthNewsDaily @MyHealth_MHND, Facebook & Google+. Originally published on LiveScience.Copyright 2013 LiveScience, a TechMediaNetwork company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.source : http://www.foxnews.com/health/2013/05/20/not-my-kid-most-parents-unaware-teen-is-using-study-drugs/

Majority of pools are contaminated by poop, CDC says

There's poop in public pools, according to a new report. Researchers at the Centers for Disease Control and Prevention (CDC) found genetic material from E. coli bacteria in 58 percent of public pools they tested during the summer of 2012. This shows that “swimmers frequently introduced fecal material into pools,” which could spread germs to other people, the researchers wrote in their report. E. coli bacteria are normally found in the human gut and feces. They also found genetic material from bacteria called Pseudomonas aeruginosa, whichcan cause skin rashes and ear infections, in 59 percent of pools. The fecal material in pools comes from swimmers not showering before getting into the water, and from incidents of defecation in pools, according to the report. The average person has 0.14 grams of fecal material on their “perianal surface” that can rinse into a pool if a person doesn't shower first, according to the report. The Pseudomonas aeruginosabacteria in the pools may have come from the natural environment, or from swimmers, the researchers said. There were no samples that showed E. coli O157:H7, a toxin-producing E. coli strain that causes illness. Two parasites, Cryptosporidium and Giardia, which also spread through feces and cause diarrhea, were found in less than 2 percent of samples. The study included 161 pools in the Atlanta area, and the researchers noted their findings may not apply to all pools, but said there is no reason to think that contamination or swimmer hygiene practices differ between pools in the study and those in the rest of the country. The researchers collected samples of water from the pools' filters, and looked for the genetic material of specific bacteria. “Chlorine and other disinfectants dont kill germs instantly,” said Michele Hlavsa, chief of CDCs Healthy Swimming Program. Its important that swimmers shower before getting in a pool, not swallow the water they swim in, and avoid swimming when they have diarrhea, she said. The CDC also recommends that parents of young children take children on a bathroom break every hour, or check diapers every 30 to 60 minutes. Diapers should be changed in a diaper-changing area, not near the poolside, the CDC says. Copyright 2013 LiveScience, a TechMediaNetwork company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.source : http://www.foxnews.com/health/2013/05/16/poop-prevalent-in-public-pools-cdc-says/