Here’s this fact in action: in 2015, a research team out of UC San Francisco proved that we can keep eating the exact same number of calories, but if we change the molecules we eat, we can heal our body of disease. They demonstrated, for example, that calories from fructose are worse than calories from glucose (it’s because fructose, as you know from part 2, inflames our bodies, ages our cells, and turns to fat more than glucose does).