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Scientists Discover A Fundamental Mechanism For Cell Organization
Scientists have discovered that cells use a very simple phase transition -- similar to water vapor condensing into dew -- to assemble and localize subcellular structures that are involved in formation of the embryo.
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Hodgkin Lymphoma Survivors Have Increased Risk Of Stroke And Transient Ischemic Attack
Patients treated for Hodgkin lymphoma with radiation therapy have a substantially higher risk of stroke, according to a new study published June 17 online in the Journal of the National Cancer Institute.
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Researchers Determine Predicting Factors Of Positive Lung Cancer Diagnoses In Chest Radiographs
A study published in the June 2009 issue of the Journal of Thoracic Oncology determined several predictors of a positive lung cancer diagnosis after having an abnormal chest x-ray. Dr. Martin Carl Tammemagi of Brock University in Ontario and his team of US researchers examined the chest radiographs of 12,314 individuals obtained through the National Cancer Institute"s Prostate Lung Colorectal Ovarian Cancer Screening Trial (PLCO). They found that older age, lower education levels and a longer smoking history were all associated with a "true positive" diagnosis for lung cancer in those individuals with an abnormal screening chest radiograph.
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Local Food Environments Can Lead To Obesity

Living in an area with more fast food outlets and convenience stores than supermarkets and grocers has been associated with obesity in a Canadian study. Researchers writing in the open access journal BMC Public Health have shown that your local food environment can affect your weight. John Spence from the University of Alberta, Canada, worked with a team of researchers to study associations between the "Retail Food Environment Index" (RFEI) and levels of obesity. He said, "The RFEI is based upon a ratio of the number of fast-food restaurants and convenience stores to supermarkets and specialty food stores in a given radius around a person"s house. We"ve shown that it correlates very well with the odds that that person may be obese". The availability of fast food and scarcity of outlets for natural ingredients within 800m of a person"s home was shown to be associated with weight, while the RFEI within a 1600m radius did not have the same effect. The researchers claim that this demonstrates that the proximity of the unhealthy environment is an important risk factor for obesity. According to Spence, "These findings may help explain the observation that geographic concentration of fast-food restaurants is associated with mortality and hospital admissions for acute coronary events in Canada". Fast-food is cheaper and more energy-dense per measure of weight than other healthier foods such as fruits and vegetables that are purchased in a grocery store. If governments want to reduce people"s intake of these energy-efficient, but ultimately unhealthy "meals", the authors recommend that they intervene to limit the creation of areas where tempting junk-food outlets are so much more prevalent than other shops. They write, "A plausible policy option for decreasing the prevalence of obesity among adults is improving the retail food environment, possibly through zoning by-laws". Notes: Relation between local food environments and obesity among adults John C Spence, Nicoleta Cutumisu, Joy Edwards, Kim D Raine and Karen Smoyer-Tomic BMC Public Health (in press) Article available at journal website. All articles are available free of charge, according to BioMed Central"s open access policy. BMC Public Health is an open access journal publishing original peer-reviewed research articles in all aspects of epidemiology and public health medicine. BMC Public Health (ISSN 1471-2458) is indexed/tracked/covered by PubMed, MEDLINE, CAS, Scopus, EMBASE, Thomson Scientific (ISI) and Google Scholar. Graeme Baldwin BioMed Central


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