http://medicalxpress.com/ en-us Medical Xpress internet news portal provides the latest news on Health and Medicine. Changes in brain function may foreshadow schizophrenia as early as puberty, nearly a decade before most patients begin showing obvious symptoms, new research from the University of North Carolina shows. http://medicalxpress.com/news/2013-04-schizophrenia-early.html Psychology & Psychiatry Thu, 04 Apr 2013 10:00:02 EST news284282078 (Medical Xpress)—Children who have an earlier onset of puberty have poorer mental health from as early as preschool age, a new study by Murdoch Childrens Research Institute has found. http://medicalxpress.com/news/2013-04-early-poor-mental-health-link.html Psychology & Psychiatry Tue, 02 Apr 2013 18:40:05 EST news284146795 An Australian researcher has found the third and final missing piece in the genetic puzzle of an unusual form of hemophilia, more than 20 year after he discovered the first two pieces. http://medicalxpress.com/news/2013-03-persistence-hemophilia-mystery-curiosity-discovery.html Genetics Thu, 07 Mar 2013 13:19:12 EST news281884744 (Medical Xpress)—In the first study of its kind, researchers have determined that teens who are homeschooled benefit from healthier sleep habits than those who go to most private and public schools. The findings provide additional evidence of teens' altered biological clocks and support an argument for starting traditional high school later in the morning. http://medicalxpress.com/news/2013-03-homeschool-students-high-school.html Health Thu, 07 Mar 2013 07:06:43 EST news281862390 Aid agencies and governments must tackle the taboos surrounding menstruation as sidelining the issue undermines the quality of life of women and girls, chiefly in poor nations, a UN body said Wednesday. http://medicalxpress.com/news/2013-03-menstruation-forgotten-issue-body.html Health Wed, 06 Mar 2013 11:38:43 EST news281792316 The brain adds new cells during puberty to help navigate the complex social world of adulthood, two Michigan State University neuroscientists report in the current issue of the Proceedings of the National Academy of Sciences. http://medicalxpress.com/news/2013-03-brain-cells-puberty-adult-world.html Neuroscience Mon, 04 Mar 2013 15:00:08 EST news281623908 FSH and LH are two important hormones which regulate the processes of puberty and maturation. These hormones are secreted by the pituitary gland and are transported in the blood to the genitalia, where they regulate maturation. http://medicalxpress.com/news/2013-02-puberty-maturation-cod.html Medical research Mon, 18 Feb 2013 08:50:01 EST news280399077 New research from Oregon Health & Science University has provided significant insight into the reasons why early-onset puberty occurs in females. The research, which was conducted at OHSU's Oregon National Primate Research Center, is published in the current early online edition of the journal Nature Neuroscience. http://medicalxpress.com/news/2013-01-epigenetics-early-onset-puberty-females.html Neuroscience Tue, 29 Jan 2013 13:00:56 EST news278686740 (Medical Xpress)—Adolescent boys with attention deficit hyperactivity disorder (ADHD) are more likely to be shorter and slimmer than their same-age peers, according to a new study published in the Medical Journal of Australia today. http://medicalxpress.com/news/2013-01-adhd-medication-growth-teenage-boys.html Attention deficit disorders Mon, 21 Jan 2013 06:46:22 EST news277973173 Radiation and chemotherapy can pack a powerful punch against all kinds of cancers. Those who survive, however, are often left with bad news: Their treatments have rendered them infertile. http://medicalxpress.com/news/2012-12-stem-cell-infertile-cancer-survivors.html Medical research Mon, 10 Dec 2012 11:52:53 EST news274362762 This study provided important data about the fertility window of women who had suffered from childhood cancer and information concerning the associated risk factors, but did not confirm the greater risk of premature menopause (before the age of 40) that was reported by the American studies. http://medicalxpress.com/news/2012-12-age-menopause-women-childhood-cancers.html Cancer Tue, 04 Dec 2012 12:07:26 EST news273845222 A study conducted by the American Academy of Pediatrics (AAP) has documented that boys in the U.S. are experiencing the onset of puberty six months to two years earlier than reported in previous research. http://medicalxpress.com/news/2012-10-documents-early-puberty-onset-boys.html Pediatrics Sat, 20 Oct 2012 05:13:14 EST news269928770 Researchers at the University of Gothenburg have discovered that a chemical can trigger the maturation of small eggs to healthy, mature eggs, a process that could give more women the chance of successful IVF treatment in the future. The results have been published in the revered journal PloS ONE. http://medicalxpress.com/news/2012-09-ivf-breakthrough.html Obstetrics & gynaecology Mon, 24 Sep 2012 10:24:46 EST news267701080 Slow-wave sleep, or 'deep sleep', is intimately involved in the complex control of the onset of puberty, according to a recent study accepted for publication in The Endocrine Society's Journal of Clinical Endocrinology and Metabolism (JCEM). http://medicalxpress.com/news/2012-09-puberty-brain-deep.html Medical research Thu, 13 Sep 2012 00:00:01 EST news266688921 (Medical Xpress)—Back-to-school time for many U.S. high school students may mean heading back into a Catch-22 of sleep. Teens are naturally inclined to stay up late, but are forced to wake up early, says Mary Carskadon, professor of psychiatry and human behavior and a noted advocate of later school starting times. http://medicalxpress.com/news/2012-09-students-school-districts.html Health Thu, 06 Sep 2012 09:24:37 EST news266142268 Despite dramatic progress in reducing Americans' exposure to lead over the past 25 years, a growing body of research finds that children and adults still face health risks from even very low levels of the toxic metal in their blood. http://medicalxpress.com/news/2012-07-health-issues-tied-low-level-exposure.html Health Tue, 17 Jul 2012 13:30:01 EST news261749756 (Medical Xpress) -- Researchers led by a team from the University of Glasgow and Oslo University Hospital, Norway have discovered that while changes in the emotions of adolescent females are directly related to age those from young males are influenced by the changing patterns of reproductive hormones that occur as individuals become more sexually mature. http://medicalxpress.com/news/2012-07-emotionality-adolescent-males-driven-hormonal.html Medical research Wed, 04 Jul 2012 07:12:42 EST news260604743 By comparing the testosterone levels of five-month old pairs of twins, both identical and non-identical, University of Montreal researchers were able to establish that testosterone levels in infancy are not inherited genetically but rather determined by environmental factors. http://medicalxpress.com/news/2012-05-testosterone-fuelled-infantile-males-product-mom.html Psychology & Psychiatry Thu, 10 May 2012 04:43:23 EST news255843709 (Medical Xpress) -- Boys who reach sexual maturity more rapidly than their peers have more problems getting along with others their age and are at a higher risk for depression, according to a Cornell study published in Developmental Psychology (47:2). http://medicalxpress.com/news/2012-05-boys-mature-rapidly-depression.html Psychology & Psychiatry Tue, 08 May 2012 06:19:45 EST news255676778 Girls who start puberty very early are more likely to have psychological problems and be at risk of sexual abuse and early pregnancy, suggests a new review published today (27 April) in The Obstetrician & Gynaecologist (TOG). http://medicalxpress.com/news/2012-04-puberty-early-psychological-problems.html Obstetrics & gynaecology Fri, 27 Apr 2012 04:26:14 EST news254719523 Children who go through puberty earlier than their peers are more likely to have poor social skills and to smoke cigarettes during their high school years, a new study in Journal of Adolescent Health confirms. Additionally, researchers found poor social skills to be associated with smoking in early maturing girls, but not as often in early maturing boys. http://medicalxpress.com/news/2012-02-early-bloomers-poor-social-skills.html Health Tue, 14 Feb 2012 09:00:01 EST news248428652 Physical exercise in the early twenties improves bone development and may reduce the risk of fractures later in life, reveals a study of more than 800 Swedish men carried out at the Sahlgrenska Academy at the University of Gothenburg, Sweden. http://medicalxpress.com/news/2012-02-early-20s-osteoporosis.html Arthritis & Rheumatism Mon, 13 Feb 2012 17:27:55 EST news248376461 (Medical Xpress) -- Environmental pollutants, eating habits, lack of exercise and genetic traits have all been raised as possible causes of earlier puberty onset in girls in recent years. http://medicalxpress.com/news/2012-02-calories-earlier-puberty.html Health Thu, 09 Feb 2012 06:21:13 EST news247990838 Every child should be tested for high cholesterol as early as age 9 - surprising new advice from a government panel that suggests screening kids in grade school for a problem more common in middle age. http://medicalxpress.com/news/2011-11-panel-child-cholesterol.html Health Fri, 11 Nov 2011 12:56:25 EST news240238578 Could persistent pollutants like DDT and PCBs or chemicals found in plastics be making you fat or diabetic? The answer may depend on what sort of bacteria you have churning around in your gut, according to Cornell scientists. http://medicalxpress.com/news/2011-11-toxins-fat-gut-bugs.html Health Thu, 03 Nov 2011 07:45:27 EST news239525117 Boys who grow up without a dad around are more likely to reach puberty later, but father their own children earlier, according to a new study. http://medicalxpress.com/news/2011-09-boys-absent-fathers-youngdads.html Psychology & Psychiatry Thu, 08 Sep 2011 13:30:01 EST news234705676 (Medical Xpress) -- Children who go through puberty at a faster rate are more likely to act out and to suffer from anxiety and depression, according to a study by researchers at Penn State, Duke University and the University of California, Davis. Theresults suggest that primary care providers, teachers and parents should look not only at the timing of puberty in relation to kids' behavior problems, but also at the tempo of puberty -- how fast or slow kids go through puberty. http://medicalxpress.com/news/2011-09-faster-puberty-linked-behavior-problems.html Psychology & Psychiatry Thu, 01 Sep 2011 09:32:39 EST news234088349 (Medical Xpress) -- Boys are maturing physically earlier than ever before. The age of sexual maturity has been decreasing by about 2.5 months each decade at least since the middle of the 18th century. Joshua Goldstein, director of the Max Planck Institute for Demographic Research in Rostock (MPIDR), has used mortality data to prove this trend, which until now was difficult to decipher. What had already been established for girls now seems to also be true for boys: the time period during which young people are sexually mature but socially not yet considered adults is expanding. http://medicalxpress.com/news/2011-08-boys-sexual-maturity-younger.html Health Thu, 18 Aug 2011 09:44:51 EST news232879467 Children with only mildly to moderately impaired kidney function experience poor growth, delays in puberty, and heart problems, according to a study appearing in an upcoming issue of the Clinical Journal of the American Society Nephrology (JASN). Therapies for these conditions might help slow the progression of kidney disease in children. http://medicalxpress.com/news/2011-08-poor-growth-puberty-heart-problems.html Diseases, Conditions, Syndromes Fri, 12 Aug 2011 15:25:14 EST news232381487 (Medical Xpress) -- A study links low vitamin D in young girls with early menstruation, which is a risk factor for a host of health problems for teen girls as well as women later in life. http://medicalxpress.com/news/2011-08-vitamin-d-linked-earlier-menstruation.html Health Thu, 11 Aug 2011 07:13:14 EST news232265570