Health and Fitness for Tuesday March 29, 2011

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Pediatrician guidance for social media BOSTON (UPI) -- Facebook and other social media sites have replaced hanging out at the mall for teens, but U.S. pediatricians say social media has pluses and minuses. To help address the positive and negative aspect social media has on youth and families, the American Academy of Pediatrics has issued a new clinical report, "The Impact of Social Media Use on Children, Adolescents and Families," scheduled to be published in the April issue of Pediatrics. "For some teens and 'tweens, social media is the primary way they interact socially," O'Keeffe says in a statement. "A large part of this generation's social and emotional development is occurring while on the Internet and on cell phones. Parents need to understand these technologies so they can relate to their children's online world -- and comfortably parent in that world." The AAP report says social engagement in social media and online communities can enhance communication, facilitate social interaction not just among friends but discover opportunities to engage in the community and help develop technical skills in teens. However, teens online can also end up at sites and in situations that are not age-appropriate and research suggests that the content of some social media sites can influence some to engage in risky behaviors. Social media also provides venues for cyberbullying and sexting. The report adds youth who are more at risk offline tend to also be more at risk online. Copyright 2011 by United Press International
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'Spicing' up your love life, with spice GUELPH, Ontario (UPI) -- For those looking to spice up their love life, Canadian researchers suggest adding the herb ginseng or the spice saffron to their diet. Massimo Marcone, a professor at the University of Guelph's department of food science, and master's student John Melnyk, examined hundreds of studies on commonly used natural edible aphrodisiacs to investigate claims of sexual enhancement either psychological and physiological. The review, published online in the journal Food Research International, found panax ginseng, saffron and yohimbine -- a natural chemical from yohimbe trees in West Africa -- improved human sexual function. "Currently, conditions such as erectile dysfunction are treated with synthetic drugs, including sildenafil, sold as Viagra, and tadalafil, sold as Cialis," Melnyk, says in a statement. "But these drugs can produce headache, muscle pain and blurred vision, and can have dangerous interactions with other medications. They also do not increase libido, so it doesn't help people experiencing low sex drive." Alcohol may increase sexual arousal, but it impedes sexual performance, the researchers say. Nutmeg, cloves, garlic and ginger are among substances linked to increased sexual behaviour in animals, but there is not enough evidence to support the widespread use of these substances as effective aphrodisiacs and more research is needed, the study says. However, avoid Spanish fly and Bufo toad, they hurt sexual function and can be toxic, the researchers say. Copyright 2011 by United Press International
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Chinese, British eye movements differ LIVERPOOL, England (UPI) -- Eye movement patterns of Chinese people -- born and raised in China -- are different from those of Caucasians living in Britain, researchers found. Researchers at University of Liverpool in England and Sichuan University in China found that a type of eye movement -- rare in British people -- is much more common among the Chinese, suggesting there may be subtle differences in brain function among populations. The research team tested fast-eye movements -- saccades -- by asking study participants to respond to spots of light with their eyes as they appeared suddenly to the right or left of their line of sight. The reaction time of the eye movements differentiated between Chinese and non-Chinese groups, the researchers say. Dr. Paul Knox says it is expected the reaction time of fast-eye movements to be about a fifth of a second and very rarely some people have shorter times. "As we expected, 97 percent of British people had the common fifth of a second delay, and only 3 percent had the much faster response," Knox says in a statement. "In our Chinese group, however, 30 percent had the faster, less common response and relatively common in Chinese people." Further investigation is needed to fully understand why this differs between populations, the researchers say. The findings are published in the journal Experimental Brain Research. Copyright 2011 by United Press International
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Study: More sugar means more weight MINNEAPOLIS (UPI) -- In almost 30 years, greater sugar consumption by U.S. men and women corresponded to the same upward trend in body weight, researchers say. Lead author Huifen Wang, a doctoral candidate in the School of Public Health at the University of Minnesota in Minneapolis, says the researchers' heart study included six surveys looking at subjects' diet, height and weight, conducted during the period of 1980 to 2009. "There is limited data available looking at how added sugar intake is related to body mass index," Wang says in a statement. "With the information provided, we examined the trends for body mass index and dietary intake of foods and beverages with added sugars across the six surveys." Consumption of sugars and syrups added to foods during processing, preparation or at the table increased during the past three decades, Wang says. Although there was a slight decline from 2000 to 2002, the consumption of added sugars remained high among the Minnesotans studied, and although other lifestyle factors should be considered for America's increasing waistlines, public health efforts should advise limiting sugar intake, the study concludes. The findings were reported at the American Heart Association's Nutrition, Physical Activity and Metabolism/Cardiovascular Disease Epidemiology and Prevention scientific sessions. Copyright 2011 by United Press International
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