Medical Xpress: PHYSorg news tagged with: particle size http://medicalxpress.com/ en-us Medical Xpress internet news portal provides the latest news on Health and Medicine. Increasing evidence for small airway role in asthma intensity (HealthDay)—There is increasing evidence that the small airways contribute significantly to the clinical expression and severity of asthma, according to research published online Nov. 9 in Allergy. http://medicalxpress.com/news/2012-11-evidence-small-airway-role-asthma.html Immunology Tue, 20 Nov 2012 17:10:02 EST news272652446 Vitamin D supplement fails to lower cholesterol in short term Taking vitamin D supplements to compensate for vitamin D deficiency didn't improve cholesterol—at least in the short term, according to new research in Arteriosclerosis, Thrombosis and Vascular Biology, an American Heart Association journal. http://medicalxpress.com/news/2012-09-vitamin-d-supplement-cholesterol-short.html Cardiology Tue, 04 Sep 2012 16:00:03 EST news265964748