Dr. Sanjay Gupta explains the science behind collagen supplements and what you should keep in mind if you’re considering them. Plus, how Transcranial Magnetic Stimulation can help those with hard-to-treat depression.   This episode was produced by Jesse Remedios.  Showrunner: Amanda Sealy   Senior Producer: Dan Bloom   Technical Director: Dan Dzula   Executive Producer: Steve Lickteig  Learn more about your ad choices. Visit podcastchoices.com/adchoices