CAD/CALP explains it that insulin can bully glucagon (the hormone which escorts fat/energy out of your fat cells) If you have too much insulin, glucagon can't usher the fat out, as insulin is too busy shoving it in. You don't want to have NO insulin however, as insulin DOES have a purpose. That is how your blood sugar is brought down. As we read in so many places, it's all about balance.. They don't mention however that it's a freaking tightrope!!