dr. mark siegal joins me now.e's a professor of medicine at new york university let's just remind our viewers how significant this is. for the surgeon general to come out and issue an advisory, this hasn't happened in 30 years. >> absolutely, julie. he's doing it because we're seeing so many deaths from opioids. he wants to target the 2 million people out there that are addicts and everyone around them, family, friends that know them, because we're seeing over 40,000 deaths per year from opioids. you know why? mostly because of fentanyl. it's so powerful that it stops breathing. heroin is laced with it. fentanyl was a prescription drug but chemists are making it illegally. it kills people by stopping breathing. if you find somebody on the street and they're not breathing and you see pinpoint pupils and no signs of respiration whatsoever, you take a pulse -- i want people out there to not just know how to use this. this is what the surgeon general is talking about. this is nar so. can nasal spray. you take your thu