I spent the last couple of months watching Dr. Fung's videos on YouTube and his IDM site. I think what he says makes a lot of sense, and certainly explains why none of my previous (low calorie, low fat, more exercise) weight loss efforts ever worked long term.

I have had some experience in intermittent fasting, done for religious reasons during Lent for the past few years. I would eat just 1 meal a day on weekdays, then have 3 meals a day on Saturdays and Sundays. The first 2-3 days fasting are hard, then it becomes like a habit. I bought into that whole "starvation mode" concept (which Dr. Fung debunks), so I actually thought fasting was causing my metabolism to slow down. Too bad, because if I continued the fasting after Lent, and coupled it with a low carb diet, I would probably already be at my goal weight today!