1) Of course high protein diets do not have better long term weight loss, because they're not about weight loss. The goal is to transition body fat into muscle. Of course they could mean low-carb diets, which work at least as well as any other dietary method. So their panic seems a tad overwrought.
2) Actually fatty foods are not necessarily fattening because there is nothing wrong with non-saturated fat. Your cell walls are made out of lipids. Lipids are, survey says... fat. Not making new cells is cool and all, until you have to heal a wound. Several essential vitamins are only soluable in fat. Polyunsaturated fats and monounsaturated fats have a variety of health benefits, and should be consumed regularly. Of course the article seems lost in ambiguity. Do we consider saturated and trans the same as unsaturated? For this? Yes. Isn't it interesting the entire argument here never once mentions science? And instead is all correlation fallacies?
3) Ah, so all Cholesterol is created equal? Of course. Not. LDL cholesterol, the second smallest type, is the culprit. What creates it? Let me just quote Wikipedia here:
http://en.wikipedia.org/wiki/LDL_cholesterolInsulin induces HMG-CoA reductase activity, whereas glucagon downregulates it.[13] While glucagon production is stimulated by dietary protein ingestion, insulin production is stimulated by dietary carbohydrate. The rise of insulin is, in general, determined by the digestion of carbohydrates into glucose and subsequent increase in serum glucose levels. In non-diabetics, glucagon levels are very low when insulin levels are high; however, those who have become diabetic no longer suppress glucagon output after eating.
So, high protein diets? Less LDL cholesterol. High carb diets? More. Keep riding the carb train!
4) You know, it's been a long time since I've seen this one. Okay, no, I lie, Ann Coulter still writes. But the straight up balls. To post a citation. To cite a paper. And then just to lie about what it says. It's amazing.
Reference 32:
Hmm. Abstract says... http://www.ajcn.org/content/66/5/1264.short32. Holt SHA, Brand Miller JC, Petocz P. An insulin index of foods; the insulin demand generated by 1000-kJ portions of common foods. Am J Clin Nutr 1997;66:1264-76.
As I said, balls. Big brass ones.Total carbohydrate (r = 0.39, P < 0.05, n = 36) and sugar (r = 0.36, P < 0.05, n = 36) contents were positively related to the mean insulin scores, whereas fat (r = -0.27, NS, n = 36) and protein (r = -0.24, NS, n = 38) contents were negatively related.
5) Ah, and we're back to general "correlation = causation."

So what prompted this failure? What is this physicians group? Physicians Committee for Responsible Medicine?
http://en.wikipedia.org/wiki/Physicians ... e_MedicineThe Physicians Committee for Responsible Medicine (PCRM) is a non-profit organization based in Washington, D.C., which promotes a vegan diet, preventive medicine, and alternatives to animal research, and encourages higher standards of ethics and effectiveness in research.
Woo woo.
Skepticism Coito. Learn to use it.