The simple answer as to why we get fat is that carbohydrates make us so; protein and fat do not
Gary TaubesWhat sets science and the law apart from religion is that nothing is expected to be taken on faith. We're encouraged to ask whether the evidence actually supports what we're being told - or what we grew up believing - and we're allowed to ask whether we're hearing all the evidence or just some small prejudicial part of it. If our beliefs aren't supported by the evidence, then we're encouraged to alter our beliefs.
Gary TaubesThe point to keep in mind is that you don't lose fat because you cut calories; you lose fat because you cut out the foods that make you fat-the carbohydrates.
Gary TaubesThe simplest way to look at all these associations, between obesity, heart disease, type 2 diabetes, metabolic syndrome, cancer, and Alzheimer's (not to mention the other the conditions that also associate with obesity and diabetes, such as gout, asthma, and fatty liver disease), is that what makes us fat - the quality and quantity of carbohydrates we consume - also makes us sick.
Gary Taubes