The other most popular sites by number of members cover arthritis, heart disease, sleep disorders, pulmonary disease, back pain, depression, GERD and bipolar disorder.

FORBES: Help For Diabetics Beyond The Doctor's Office

The five most expensive health conditions in the United States are heart disease, cancer, trauma, mental disorders, and pulmonary conditions.

FORBES: Free Market Rules Don't Work In Delivering Health Care

Professor Danny McAuley from the Centre for Infection and Immunity, a partner in developing the new nanomedicine, said that, if successful, this nanomedicine could also have application in other common lung disorders such as Chronic Obstructive Pulmonary Disease (COPD) and Cystic Fibrosis.

BBC: lungs