…is not a calorie:
“Our current system for assessing calories is surely wrong,” said evolutionary biologist Richard Wrangham of Harvard University, the co-organizer of the panel.
In a wide-ranging discussion of how food is digested in everything from humans to rats to pythons, the panel reviewed a new spate of studies showing that foods are processed differently as they move from our gullet to our guts and beyond. They agreed that net caloric counts for many foods are flawed because they don’t take into account the energy used to digest food; the bite that oral and gut bacteria take out of various foods; or the properties of different foods themselves that speed up or slow down their journey through the intestines, such as whether they are cooked or resistant to digestion.
Of course, in addition to that, the thermodynamic theory of nutrition doesn’t take into account how your metabolism responds to different kinds of calories. In a just world, much of the lipophobic nutrition industry would be sued into oblivion, or in prison, bearing responsibility for millions of premature deaths, and sufferers of ill health. Instead, they still seem to be in charge of the FDA.