Fat, healthy fat Anyone who calls Roizen at his Chicago office, even with an appointment, will find that he is a busy man. He's with a patient, the receptionist says. An hour and fifteen minutes later, he has just ducked out. But he'll be back, a caller is told. I'm sorry about this.
Third call's a charm.
He's entertaining and humorous as he talks about his work and his discoveries. I did exercise, and I did try and watch food, but I didn't watch total calories, if you will. As he researched diet and nutrition, he got a lot of surprises. I figured all fats are bad. But it turns out you need fat for functioning of immune system.