The notion of binary carbohydrate vs. fat metabolism is not reality. You're always using some of both, the balance just shifts dependent on a whole host of fact

The notion of binary carbohydrate vs. fat metabolism is not reality. You're always using some of both, the balance just shifts dependent on a whole host of factors. Further, this has little to do with what happens to ingested nutrients. Fat and sugar are digested concurrently. You gut doesn't "decide" not to absorb fat, or to shove it into adipose tissue (there's no pathway for his; fat has to be digested before storing) because there was carbohydrate in your meal. The comparison of sugar to cocaine is absurd. I don't have the will to try explaining it right now, but I urge you to read the literature on the subject, not write ups by bloggers/journalists.