Dr. Mark B Yagan M.D.

No, they are not names of mythical characters from a fantasy novel. Far from it, really! As charming as their names sound, "pink puffer" is not the furry little pink creature that you are tempted to imagine nor is the "blue bloater" a big and friendly blue giant. What do these terms mean exactly?To...

CF is an inherited disease that progresses throughout a patient’s life. Progression can occur when the thick and sticky mucus that accumulates within the body triggers inflammation and scarring in multiple different organs, thus leading to permanent damage. Unfortunately, many CF symptoms and...

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...

What is Bronchitis?We often run under weather catching a flu or a cold that stays on for a couple of days to weeks, after which we normally get back to normal. However, sometimes even a small infection of cold or flu, could turn into a bronchitis infection causing much disturbance to your normal...

IntroductionOrthopnea is the medical term used when referring to the occurrence of dyspnea (shortness of breath) when you are lying flat. This symptom is often a sign of heart failure. However, orthopnea can also be due to other health conditions. Dyspnea (shortness of breath) is not the same with...

Spiked Columnist, Tim Black, discusses advances in genetic editing in his article, Gene Editing: An Expression of Our Humanity.Tim Black questions how people should all consider the recent negative responses to some of the latest gene-editing successes. The majority of these gene-editing techniques...