http://medicalxpress.com/ en-us Medical Xpress internet news portal provides the latest news on Health and Medicine. Community-acquired pneumonia is the leading cause of infectious death among the elderly. Newly published research from The University of Texas Health Science Center San Antonio suggests why older people are vulnerable and offers a possible defense. http://medicalxpress.com/news/2011-05-aging-obsolete-cells-prime-lungs.html Medical research Thu, 26 May 2011 13:10:01 EST news225633570 Colorectal cancer patients with defects in mismatch repair--one of the body's systems for repairing DNA damage--have lower recurrence rates and better survival rates than patients without such defects, according to a study published online May 19th in the Journal of the National Cancer Institute. http://medicalxpress.com/news/2011-05-dna-affects-colon-cancer-recurrence.html Cancer Thu, 19 May 2011 16:23:38 EST news225040984 (PhysOrg.com) -- Localized hyperthermia has been used occasionally with cancer drugs for some time, but until now, the reason it helps has been a mystery. In a report in the Proceedings of the National Academy of Sciences, scientists have discovered that the addition of heat inhibits homologous recombination so the cancer cells are unable to repair DNA damage caused by the cancer treatments. http://medicalxpress.com/news/2011-05-cancer-drugs.html Cancer Tue, 10 May 2011 15:00:01 EST news224255592