2,000 calories/day: we’re all 100 watt light bulbs with the orthodox nutritional advice. The more I read more about metabolism, the more ludicrous it seems.

  1. Change in energy stores = energy input – energy output. This equation has to be balanced, although it implies no causality. An increase in energy input (i.e. eating more) could cause a person to increase his energy output (i.e. higher metabolic rate), etc.
  2. Overweight people overeat. This is about as profound as saying that alcoholics drink too much. Daily caloric intake between two adults can vary by a factor of five (e.g. people on caloric restriction diets vs. ultramarathon runners), yet their weights can be stable.
  3. Twenty-seven hundred calories per day is a million calories per day. Over two decades that’s 25 tons of food. It’s actually amazing that humans can maintain such a relatively stable weight for so long.

After reading “Good  Calories, Bad Calories” by Gary Taubes, listening to the Cooking Issues podcast, looking through “What I Eat” by Peter Menzel and Faith D’Aluisio, and watching “No Reservations” with Anthony Bourdain, as well as tracking my own diet with MyPlate, I’ve broken down a lot of assumptions that I made in the past.