http://medicalxpress.com/ en-us Medical Xpress internet news portal provides the latest news on Health and Medicine. The company an adolescent keeps, particularly when it comes to drugs and criminal activity, affects bad behavior. Right? http://medicalxpress.com/news/2011-09-resisting-peer-pressure.html Psychology & Psychiatry Wed, 28 Sep 2011 09:57:08 EST news236422567 Young people who find tobacco displays in shops attractive and who easily recall seeing the displays have a greater chance of becoming a smoker according to a new Cancer Research UK funded research study published in Nicotine and Tobacco Research today. http://medicalxpress.com/news/2011-09-tobacco-odds-teens-smokers.html Health Tue, 13 Sep 2011 11:30:08 EST news235132197 Duke University Medical Center researchers have found a genetic variant that seems to be associated with lower five-year survival after a coronary artery bypass. http://medicalxpress.com/news/2011-09-gene-linked-death-coronary-bypass.html Cardiology Tue, 13 Sep 2011 09:23:52 EST news235124622 (Medical Xpress) -- Medical researchers have discovered a new type of mechanism causing cancer susceptibility, showing that tiny changes in some anti-cancer genes can act as magnets to attract modifying "biochemical tags", effectively switching them off and predisposing families to an increased risk of the disease. http://medicalxpress.com/news/2011-08-hereditary-cancer.html Cancer Tue, 16 Aug 2011 07:57:48 EST news232700108 New research led by The Hospital for Sick Children (SickKids) and the University of Toronto has identified more genes in attention deficit hyperactivity disorder (ADHD) and shows that there is an overlap between some of these genes and those found in other neuropsychiatric conditions such as autism spectrum disorder (ASD). The study is published in the August 10 advance online edition of Science Translational Medicine. http://medicalxpress.com/news/2011-08-adhd-genes-links-susceptibility-autism.html Genetics Wed, 10 Aug 2011 17:10:12 EST news232214970 Eight out of ten Australians would radically change their risky behaviour if tests showed they had a genetic susceptibility to depression, a national study has found. http://medicalxpress.com/news/2011-08-depression.html Psychology & Psychiatry Tue, 02 Aug 2011 06:07:55 EST news231476097 Osteoporosis is the reduction in bone strength that occurs during aging, which increases the chance of elderly people experiencing breaks. A genome-wide association study in the Japanese population has revealed that a genomic variant within a newly identified gene, which the discoverers have named FONG, enhances susceptibility to osteoporosis. http://medicalxpress.com/news/2011-07-bone-disease.html Genetics Fri, 29 Jul 2011 10:50:03 EST news231154029 Eating a diet high in vitamin D, as well as the nutrients betaine and methionine, might help reduce the risk of macular degeneration, according to new research conducted by Tufts Medical Center scientists. Their study of identical twins from the US World War II Twin Registry also found that the more a person smoked, the higher their risk of developing macular degeneration. The study, "Smoking, Dietary Betaine, Methionine, and Vitamin D in Monozygotic Twins with Discordant Macular Degeneration: Epigenetic Implications" published in the journal Ophthalmology on July 1, is the first to look at identical twin pairs in which one twin had early age-related macular degeneration (AMD), and the other had late stage AMD. http://medicalxpress.com/news/2011-07-twin-lifestyle-diet-significantly-macular.html Health Tue, 05 Jul 2011 17:12:57 EST news229104757 The largest and most rigorous twin study of its kind to date has found that shared environment influences susceptibility to autism more than previously thought. http://medicalxpress.com/news/2011-07-environment-heritability-ebbs-autism.html Psychology & Psychiatry Mon, 04 Jul 2011 16:00:16 EST news229008984 An international research team, co-led by scientists at Mayo Clinic's campus in Florida, have discovered three potential susceptibility genes for development of progressive supranuclear palsy (PSP), a rare neurodegenerative disease that causes symptoms similar to those of Parkinson's disease but is resistant to Parkinson's medications. Their report is being published online June 19 in Nature Genetics. http://medicalxpress.com/news/2011-06-susceptibility-genes-neurodegenerative-disorder.html Genetics Sun, 19 Jun 2011 13:00:29 EST news227706753 For tens of thousands of years, the genomes of malaria parasites and humans have been at war with one another. Now, University of Pennsylvania geneticists, in collaboration with an international team of scientists, have developed a new picture of one way that the human genome has fought back. http://medicalxpress.com/news/2011-06-evidence-genetic-arms-malaria.html Genetics Thu, 09 Jun 2011 13:17:57 EST news226844262 Panic disorder sufferers will tell you the attacks are some of the most sudden, frightening and uncomfortable experiences ever. But what makes some people susceptible to these attacks and others not? Studies of twins point to hereditary factors playing a key role in 40% of cases. How genes are involved in panic disorder risk is unclear, however. A European group of researchers has implicated one type of molecular switch, short or micro ribonucleic acid molecules (miRNAs) in panic disorder. The research, funded in part by the EU, is presented in the journal Biological Psychiatry. http://medicalxpress.com/news/2011-04-molecular-affects-panic-disorder.html Psychology & Psychiatry Fri, 15 Apr 2011 08:49:34 EST news222076140