Quote:
Originally Posted by Mel
I read the Time articles last night. Going back to the glycemic index question vs. calories in/calories out, I know I've been in the minority here for saying that it does matter in my experience. I was a Weight Watchers and low fat failure for years- regaining what little I would lose on those plans no matter how much I exercised. It wasn't until I started SugarBusters which is entirely based on low glycemic eating that I successfully lost and continued to lose, and have maintained that loss for almost six years. I am (or was) a complete apple and having gestational diabetes would idicate that my insulin regulation and use is not up to snuff! Finally science is backing up my trial and error methodology! 
Mel
I am somewhere in between. I think both are important. To paraphrase Will Brink's Unified Theory of Nutrition: Calories In/Calories Out will determine
whether you lose or gain, where those calories come from will determine
what you lose or gain.
I think insulin control is critical to anyone seeking to improve body composition whether it be mainly through the loss of fat or through the addition of muscle. Insulin is the key to fat storage but it also key to pulling amino acids into cells and protein synthesis.
So, I try to keep my blood sugar stable most of the time by getting my carbs from low-GI sources such as vegetables and fruits. The exceptions being post-workout, where I will use faster acting carbs in order to take advantage of the anabolic functions of insulin.
While calories in and calories out do matter, this is does not mean that a "calorie is a calorie." A 100 calories of broccoli and a 100 calorie "diet" pack of mini-oreos are not the same!