The market for apps designed to improve health and wellness or even to diagnose and treat medical conditions continues to grow.  Last week, the U.S. Food and Drug Administration (“FDA”)  approved a new smartphone-based “carbon monoxide breath sensor system” that measures carbon monoxide levels on a user’s breath. The sensor, which is intended to help users quit smoking, tracks the real time effects of a user’s smoking behavior.  And just a few weeks ago, the FDA gave its approval to a cognitive behavioral therapy app to be used in outpatient therapy for substance use disorders related to alcohol, cocaine, marijuana and stimulants.  Continue Reading Building a Health App? Part 4: Avoiding an FTC Enforcement Action