How antibiotics mess with your gut Video

  • Now Playing: Aspirin and your heart health


  • Now Playing: The disturbing findings on overuse of antibiotics




  • Now Playing: Many pregnant women are being prescribed potentially dangerous antibiotics: CDC




  • Now Playing: How antibiotics mess with your gut




  • Now Playing: FDA issues new warnings on breast implants




  • Now Playing: Mom reveals to police officer on Facebook that she’s giving him her kidney




  • Now Playing: Susan Lucci urges women to look out for heart disease symptoms following scare




  • Now Playing: How brands are using ASMR to sell products to millennials




  • Now Playing: People are trying face yoga in an attempt to reduce wrinkles and signs of aging




  • Now Playing: How much toothpaste is too much for kids?




  • Now Playing: 72-year-old woman who does CrossFit daily is serious #workoutgoals




  • Now Playing: Getting heart healthy with Michael and Sara




  • Now Playing: Toothpicks injure thousands per year




  • Now Playing: What is a rape kit?




  • Now Playing: New study shows nearly half of all Americans have heart disease




  • Now Playing: Sara takes the J. Lo photo challenge




  • Now Playing: Thriver Thursday: How a cancer survivor decided to choose joy against all odds




  • Now Playing: Hypothermia warnings as temperatures plunge




  • Now Playing: Measles outbreak prompts warning from health officials




  • Now Playing: Parents irate after baby possibly exposed to measles in Washington state clinic