Dr. John R Greenland M.D., PH.D.

What is a persistent cough?It can be annoying to have a cough that lasts for more than a couple of weeks. A cough is considered chronic or persistent if it does not go away after four weeks in children and eight weeks in adults. However, most persistent coughs are due to colds, flu, infection, or...

Pneumonia is a lung infection that is caused by bacteria, viruses, or parasites. Moreover, pneumonia can develop in just one lobe of the right or left lung, the entire lung, or both of the lungs simultaneously. The primary characteristic of this lung disease is the inflammation of the air sacs or...

Cystic fibrosis (CF) is an inherited disease that is caused by a defect in the cystic fibrosis transmembrane conductance regulator (CFTR) gene. The CFTR protein is responsible for controlling the transportation of salt in and out of cells. Any mutations in the CFTR gene can cause an imbalance in the...

Since cystic fibrosis runs in the family, continuously researching news about the disease can help both patients and their families stay up to date on current events, such as new CF medications and treatments. Yet, for one woman, Dr. Wanda O’Neal, merely researching the latest information on CF...

Because cystic fibrosis affects nearly the entire body, all too many people with this genetic disorder think about their symptoms and outlook then fall into a pit of despair. Not everyone. And certainly not Mae Johnson, a 14 year old girl from Adelaide, Australia.In fact, this enterprising teenager...

There’s a lot for parents to process and prepare for when they have a baby on the way. To find out that twins are coming monumentally adds to the planning necessary for their arrival. For parents to know they’ll be caring for children with a debilitating genetic disease is even more pressure...