http://medicalxpress.com/ en-us Medical Xpress internet news portal provides the latest news on Health and Medicine. (Medical Xpress)—Human bone breaks down and regenerates naturally all the time, in a perfectly balanced dance that maintains skeletal integrity. http://medicalxpress.com/news/2013-06-osteoporosis.html Medical research Wed, 19 Jun 2013 07:40:29 EST news290846418 A mechanism that permits essential substances to enter our cells while at the same time removing from them harmful components also has a "down side." This negative aspect prevents vital drugs, such as anti-cancer drugs, from achieving their designed functions, while also enabling bacterial cells to develop resistance to penetration of antibiotics. http://medicalxpress.com/news/2013-05-traffic-cells.html Medical research Wed, 01 May 2013 10:21:02 EST news286622453 In a sobering study published in the journal Environmental Health, researchers at UC Davis and UCLA measured food-borne toxin exposure in children and adults by pinpointing foods with high levels of toxic compounds and determining how much of these foods were consumed. The researchers found that family members in the study, and preschool children in particular, are at high risk for exposure to arsenic, dieldrin, DDE (a DDT metabolite), dioxins and acrylamide. These compounds have been linked to cancer, developmental disabilities, birth defects and other conditions. However, the study also points to dietary modifications that could mitigate risk. http://medicalxpress.com/news/2012-11-high-exposure-food-borne-toxins.html Health Tue, 13 Nov 2012 14:00:10 EST news272037536 A consortium of Quebec researchers coordinated by the Medical Genetics Service of the Sainte-Justine UHC has just published the findings of a 25-year study on the treatment of tyrosinemia, a life-threatening liver disease of genetic origin, which is screened at birth in the province of Quebec, where it is much more frequent than anywhere else in the world. "After five years of treatment, no trace of the disease can be detected in the liver of newborns who were treated with nitisinone starting from the first month of life," states Dr. Grant Mitchell of the Sainte-Justine UHC and the University of Montreal, who is the senior author of a study published in Molecular Genetics and Metabolism in September 2012. http://medicalxpress.com/news/2012-10-nitisinone-efficacy-life-threatening-liver-disease.html Diseases, Conditions, Syndromes Wed, 31 Oct 2012 16:18:21 EST news270919052 (Medical Xpress)—A majority of Americans who live in multi-unit housing have adopted smoke-free rules in their private homes but millions remain involuntarily exposed to secondhand smoke in this environment, according to a study published in the most recent issue of the American Journal of Public Health. Researchers led by senior investigator Andrew Hyland, PhD, Chair of the Department of Health Behavior at Roswell Park Cancer Institute (RPCI), recommend smoke-free building policies to protect all multiunit residents from secondhand smoke exposure in their homes. http://medicalxpress.com/news/2012-09-secondhand-exposure-persists-multi-unit-housing.html Health Tue, 11 Sep 2012 08:16:21 EST news266570137 Water-pipe smoking is as bad as deeply inhaling cigarette smoke when it comes to causing respiratory problems, according to a study published on Thursday. http://medicalxpress.com/news/2012-08-shisha-bad-cigarettes-lungs.html Addiction Thu, 30 Aug 2012 09:21:39 EST news265537288 Adolescent smokers have thicker artery walls indicative of early development of atherosclerosis, according to research presented today at the ESC Congress. The findings from the Sapaldia Youth Study were presented by Dr Julia Dratva from Switzerland. http://medicalxpress.com/news/2012-08-adolescent-smokers-artery.html Cardiology Mon, 27 Aug 2012 09:57:29 EST news265280241 Current thinking about Parkinson's disease is that it's a disorder of mitochondria, the energy-producing organelles inside cells, causing neurons in the brain's substantia nigra to die or become impaired. A study from Children's Hospital Boston now shows that genetic mutations causing a hereditary form of Parkinson's disease cause mitochondria to run amok inside the cell, leaving the cell without a brake to stop them. Findings appear in the November 11 issue of Cell. http://medicalxpress.com/news/2011-11-neurons-die-parkinson-disease.html Medical research Thu, 10 Nov 2011 14:32:20 EST news240157693 Newborn mice that are exposed to Bisphenol A develop changes in their spontaneous behavior and evince poorer adaptation to new environments, as well hyperactivity as young adults. This has been shown by researchers at Uppsala University. Their study also revealed that one of the brain's most important signal systems, the cholinergic signal system, is affected by Bisphenol A and that the effect persisted into adulthood. http://medicalxpress.com/news/2011-10-environmental-toxin-bisphenol-affect-newborn.html Health Wed, 26 Oct 2011 11:00:36 EST news238845629