In this week’s special Be HEALTHistic “Ask the Doctors” Video Extra, Drs. Stephen and Drew Sinatra answer your questions from Facebook about chronic obstructive pulmonary disease, or COPD. From the causes and symptoms of COPD, to the most important diagnostic tests to get, to the best foods to eat and supplements to take — the doctors share actionable information and advice for managing COPD and supporting healthy lung function.