Insulin resistance is not "metabolic syndrome." That is like calling high cholesterol "heart disease." So right away, your entire statement is a straw man.
Originally Posted by Paleobird
Now that we've established your post is a fallacy, I'll continue to beat the drum that low carbohydrate dieting causes insulin resistance - because it is a natural reaction to low carbohydrate dieting. Your body preferentially burns glucose when available, so when it is restricted, in order to more efficiently burn free fatty acids (a less efficient source of fuel than sugar), the body has to adapt by becoming resistant to insulin. Why? Because insulin flows throughout the body at all times, and insulin is indirectly proportional to fatty acid oxidation - the higher the insulin, the less FFA's you oxidize and vice versa. Since insulin doesn't drop below baseline, in order to ramp up FFA oxidation to accommodate for a lack of glucose, a more efficient ATP source, the body becomes...
The insulin levels inside the body remain constant, you just become resistant to them to increase FFA oxidation. That's how it works.
Mark goes into metabolic syndrome in the book. Mark never says the cause is carbohydrate. If Mark were to ever make that statement, he'd be wrong. In addition, Mark has stated that some of the things written in The Primal Blueprint he no longer believes himself. 3 years ago, Mark was much more into crazy talk like "metabolic advantage," and even threw around the phrase "It's all about insulin." He is now much more calorie-minded, and is much more relaxed in his approach (as indicated in "Primal Cravings")...his last post even stated pizza is okay every now and then for non-celiacs. His "Primal Cravings" book has nearly completely eliminated nuts, completed eliminated nut meals and now uses coconut and tapioca flours. It's almost like he's been following my posts, huh? I'm proud to be ahead of the Primal Blueprint curve
Don't put your trust in anyone on this forum, including me. You are the key to your own success.