Fat and Sick or Just Fat?

Interesting blog post, with a typical BLUF:  study tests a typicaly "low fat" dieteary intervention, and the results are lukewarm at best, and the study authors conclude that the only solution these sick and non-sick but obese people have to hope for is a yet to be invented pharmaceutical intervention.
http://ramblingsofacarnivore.blogspot.com/2011/11/low-fat-another-nail-in-coffin.html

The most interesting part of the post is this:

“In the last few years it has been shown that metabolically healthy obese (MHO) individuals comprise roughly 30% of obese people and 10% of the adult general population [1– 5]. In addition to having insulin sensitivity that is similar to non-obese individuals, MHO individuals have lower liver fat content and lower intima media thickness (IMT) of the common carotid artery than obese insulin-resistant (OIR) individuals [6].”

In other words, about 30% of those people who can be labelled "obese" still retain normal metabolic function, which is to say their body is still able to regulate glucose via the action of insulin. 

The study cited is just another example of the mediocrity of low fat diets, and what would have made interesting is if, like some similar studies, a low carb group had been included for comparison (100g/day of carbs, or approximately 20% of total energy intake in a 2000 kcal diet).  My prediction, not particularly bold since this has already been determined, is:  for most of the participants, the low carb approach would result in more weight loss, better lipid results, and improved insulin sensitivity/metabolic health.