Why Fasting Succeeds Where Caloric Restriction Fails
Dr. Jason Fung

Dear Doc,

I fully agree that lowering insulin is key, but without a caloric deficit it won’t work either.

I think that the “only calories matter” and the “only insulin matter” mantras are overly simplistic and misleading. I think that “you should lower insulin and be in a caloric deficit” mantra might be a more balanced one.