David Katz on America’s Test Kitchen Radio episode 405 (interview starts at time stamp 17:20).
On calories in vs calories out (22:30):
You get differential disposition of calories depending on what they are from and how that affects physiology.
So for example, calories from sugar will evoke an insulin response, and insulin in turn increases the tendency that calories will be deposited not only in body fat, but body fat in a harmful place right around the middle. If you get your calories from monounsaturated oil or omega3 oil or high quality protein you’re going to have a different insulin response and those calories will go to different places in your body. So yes, the nature of the calories matters.
The other critical thing here, Chris, and the thing I was about to say this is, the quality of foods that we eat profoundly influences the number of calories it takes to feel full.
On science vs hucksters (30:18):
You maintain, Chris, that the public knows what to do, and that’s a huge part of the problem. See, somebody like me, I really want to empower people with useful information but you ask me any question and I start hemming and hawing, right? There’s subtlety, there’s nuance, but you talk to the hucksters and the charlatans or the fools and fanatics, and they’ll tell you, “Geez you know, Katz is dull as dishwater – he hems and haws.” You talk to a legitimate scientist, we always have doubts, “Well there’s science in favour, science against.” But you talk to dyed in the wool huckster, they know with absolute certainty that just the one simple thing you need to do, “It’s effortless, the pounds will drop off, the years will melt away.” You know, who can resist? I mean, your eyes glaze over, you go into a trance and you start reaching for your credit card.
The takeaway (36:10):
Feet, forks, fingers, sleep, stress, and love.