http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. Researchers from the Peninsula Medical School and the University of Bristol, using data from the Avon Longitudinal Study of Parents and Children and the Exeter Family Study of Childhood Health, have identified a common genetic variant that explains why some women may find it more difficult to quit smoking during pregnancy. http://www.physorg.com/news161604372.html Medicine & Health Fri, 15 May 2009 11:06:47 EST news161604372 Naltrexone, an opioid antagonist approved in 1994 by the U.S. Food and Drug Administration for alcohol-dependence (AD) treatment, can reduce relapse rates among AD patients. Research on naltrexone's effectiveness on nicotine dependence is less clear, although researchers believe it may be helpful for specific smoker subgroups. A new study has found that naltrexone can help non-AD smokers who drink heavily on a social basis. http://www.physorg.com/news156704988.html Medicine & Health Thu, 19 Mar 2009 18:10:08 EST news156704988 Although many women quit smoking during pregnancy to protect their unborn children from the effects of cigarettes, half of them resume the habit within a few months of giving birth. http://www.physorg.com/news139068457.html Medicine & Health Wed, 27 Aug 2008 15:07:37 EST news139068457