What Is a Healthy Diet? The Answers Are Unsatisfying

Thirty-five years after the first dietary guidelines, how much do we really know about the science behind a healthy diet?

In the 1960s and 1970s, doctors pointed to two likely culprits for the country’s heart disease epidemic: dietary fat and cholesterol. Much of the country tried to avoid fat at all costs. But did the low-fat recommendation help or hurt? And why is nutrition still so controversial?

For teachers
  • Producer: Scott Michels
  • Producer: Drew Magratten
  • Editor: Sandrine Isambert