Taubes read papers by or interviewed a lot of researchers before he came to his opinion that processed carbohydrates were the culprits. His evidence is in his book.

I recently and serendipitously came across another opinion that supports the metabolic hypothesis. David Ludwig, chair of pediatric endocrinology at Children's Hospital in Boston, wrote in a recent issue of Focus, the Harvard Medical School's news bulletin, "Studies have linked a high-glycemic diet to diabetes, obesity, and certain cancers in the general population. Rapid changes in blood sugar set into action a sequence of hormonal events that promote deposition of fat, increase hunger, place additional stress on the pancreas, and may cause insulin resistance in key tissues -- ultimately resulting in a range of clinical problems linked to the glycemic load."

It's interesting that he specifies "rapid changes," implying that even a short spike could be deleterious.

He said a recent study of Italians found twice the prevalence of fatty liver disease in people whose three-day diet records showed the highest glycemic index. But "subgroup analysis showed this effect to be present only in individuals who were insulin resistant."

In other words, here is evidence of YMMV. Some lucky people may be able to tolerate high glycemic loads and others cannot. Most people don't know if they or their children are already insulin resistant. Anyone who gains weight easily probably is. And if you've been diagnosed with type 2 diabetes you almost certainly are (although you may turn out to have another type of diabetes). Hence, you should think carefully about the metabolic theory and what it means to you.

As always find out what works for you. We're all different. How do different dietary approaches affect your own hunger? Your weight? Your energy levels? Your blood glucose levels? How do the various diabetes medications affect those same factors?

What if you have to take insulin to control your blood glucose levels? Is the extra insulin making you gain weight? Could you reduce the amount of insulin you're injecting by eating less carbohydrate? By taking another drug or by exercising more to reduce your insulin resistance?

Keep informed by reading the information on sites such as this one. Stay up to date with the latest findings. Don't accept anyone's theory as the last word. Theories are constantly evolving. You need to take charge and discover what works for you. You are the most important person in your battle with diabetes.