Body

Retirement leads to a substantial reduction in mental and physical fatigue and depressive symptoms, finds a study published on bmj.com today. However, the research also concludes that retirement does not change the risk of major chronic illnesses such as respiratory disease, diabetes and heart disease.

The authors, led by Dr Hugo Westerlund from Stockholm University, say their research findings have important implications given that people will be working for longer and retiring later in life.

WASHINGTON, D.C., November 23, 2010 -- Magnetic fluid hyperthermia (MFH) is a promising new cancer treatment that essentially "fries" cells inside tumors. The procedure has been used successfully in prostate, liver, and breast tumors. Magnetic nanoparticles (each billionths of a meter in size) are injected into the body intravenously and diffuse selectively into cancerous tissues. Add a high-frequency magnetic field, and the particles heat up, raising the temperature of the tumor cells.

Pity the poor female fruit fly. Being a looker is simply not enough, it seems. If you're to get a date, much less a proposal, you must also smell and act like a girl. Otherwise, you might just have a fight on your hands. Read more in next week's issue of the online, open access journal PLoS Biology.

Annual screening by fecal immunochemical testing—a test that detects blood in the stool, has high sensitivity and specificity, and might improve participation rates through increased patient acceptability—reduces the risk of colorectal cancer and colorectal cancer related deaths, and reduces healthcare costs in comparison to all other screening strategies and to no screening. These are the conclusions of a complete economic evaluation performed by Braden Manns and colleagues from the University of Calgary, Alberta, Canada, and published in this week's PLoS Medicine.

A comparison of two strategies to determine the stage of suspected non-small cell lung cancer (NSCLC) finds that the less invasive method is more effective at identifying a type of lung cancer that has spread, and may result in a reduction of unnecessary surgical procedures and associated adverse effects for certain patients, according to a study in the November 24 issue of JAMA.

In a cross-sectional study from the 2004 and 2007 Australian National Drug Strategy Household (NDSH) surveys, respondents were questioned about their current and past drinking, the presence of formal diagnosis for specific diseases (heart disease, type 2 diabetes, hypertension, cancer, anxiety, depression) and self-perceived general health status. The sample sizes for the 2004 and 2007 NDSH surveys were 24,109 and 23,356, respectively.

Lions, bears, monkeys, crocodiles, parrots and iguanas may seem inoffensive at first glance when they're behind bars in zoos. But some exotic species can escape and become invasive species. This has been confirmed by a scientific team that has checked 1,568 animal houses in 63 Spanish zoos. Birds are the animals most likely to escape.

(Boston) – Researchers from the Boston University School of Medicine (BUSM) have demonstrated that commensal species of the genus Neisseriae are low inducers of human airway epithelial cell responses as compared to the pathogenic species. Specifically, the study indicates that a Neisserial outer membrane component appears to play a differential role in the host inflammatory responses via interaction with a receptor on the surface of human airway epithelial cells.

AMES, Iowa - Most living plant and animal species have a certain, relatively small, amount of variation in their genetic make-up.

Differences in height, skin and eye color of humans, for example, are very noticeable, but are actually the consequences of very small variations in genetic makeup.

WASHINGTON — Earth and space science missions developed and implemented by federal agencies in collaboration typically result in additional complexity and cost and increased risks from divided responsibilities and accountability, says a new report from the National Research Council. Federal agencies should not partner in conducting space and earth science missions unless there is a compelling reason to do so and clear criteria are met in advance.

23 November 2010 (Geneva, Switzerland) – The International AIDS Society (IAS) cautiously notes the comments from Pope Benedict that condom use could, in specific circumstances, be acceptable, but calls on the Pope and the Catholic Church to come out clearly and strongly in support of all evidence-based methods of HIV prevention, including condom use.

November 23, 2010 – Geneva, Switzerland – The International AIDS Society (IAS) calls on the Burmese Government to reverse a ruling made on November 18 to shut down a charitable HIV/AIDS clinic in Rangoon. The government demand came just one day after Aung San Suu Kyi, the recently released Nobel Peace Prize laureate visited the centre to show her support.

CHICAGO (November 23, 2010) - Even though most people are aware that good oral health is essential for the overall health of both mother and child, misunderstandings about the safety of dental care during pregnancy may cause pregnant women to avoid seeing their dentist. The fact is that dentists can create a treatment plan that is safe, effective, and essential for combating the adverse effects of oral disease during pregnancy.

NEW YORK (Nov. 23, 2010) -- A hormone made by the body may be a potential therapeutic tool for the treatment of two anemic blood disorders -- beta-thalassemia and hemochromatosis. The new research was led by scientists at Weill Cornell Medical College and published in the Journal of Clinical Investigation and the journal Blood.

If you're lucky, it will all be kisses and hugs around the Thanksgiving dinner table, with friends and family near and dear gathered about, and puppies gathered around your feet waiting for table scraps.

But peace won't reign within the confines of the oral cavity, where Streptococcus mutans and other harmful bacteria will await their own holiday feast. Your meal will enable S. mutans to launch one of its biggest assaults of the year on your tooth enamel.