article - some of us know already - carb may make you gain weight

Basically the article said that not how much you eat but how much crabs you eat may determine how much calories you are burning... and if you would gain weight...

http://www.nytimes.com/2012/07/01/opinion/sunday/what-really-makes-us-fat.html?src=me&ref=general
What Really Makes Us Fat
By GARY TAUBES
Published: June 30, 2012

A CALORIE is a calorie. This truism has been the foundation of nutritional wisdom and our beliefs about obesity since the 1960s.
What it means is that a calorie of protein will generate the same energy when metabolized in a living organism as a calorie of fat or carbohydrate. When talking about obesity or why we get fat, evoking the phrase “a calorie is a calorie" is almost invariably used to imply that what we eat is relatively unimportant. We get fat because we take in more calories than we expend; we get lean if we do the opposite. Anyone who tells you otherwise, by this logic, is trying to sell you something.

But not everyone buys this calorie argument, and the dispute erupted in full force again last week. The Journal of the American Medical Association published the results of a clinical trial by Dr. David Ludwig of Boston Children’s Hospital and his collaborators. While the media tended to treat the study as another diet trial — what should we eat to maintain weight loss? — it spoke to a far more fundamental issue: What actually causes obesity? Why do we get fat in the first place? Too many calories? Or something else?

The calorie-is-a-calorie notion dates to 1878, when the great German nutritionist Max Rubner established what he called the isodynamic law. (>>>)

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That's certainly true with me. I have to watch my carbs closely in order to lose weight.