A calorie is-

teasdino

Hey, I don't know if you got the answer you were looking for, but here it is.


What's in a Calorie?
Proteins, fats, carbohydrates, and alcohol have been assigned a simple caloric value most dieters know by heart. Protein and carbs supply 4 calories per gram of food while fat supplies 9 calories per gram. And alcohol lands in the middle -- at about 7 calories per gram. But in light of this new study, researchers believe that these caloric factors may be outdated and may overestimate calories. And the researchers figure that the caloric value of pistachios is probably overestimated by about 6 percent, given the number of calories that actually get absorbed.