This is the point of the Atkins diet. This guy was able to get a book deal making that very same point? Yeah, anybody who says carbohydrates are making us fat is saying the same thing as anyone else who is advocating that position. If nothing else, it's an interesting history of the prevailing opinions of medical science. For instance, obesity was considered a disorder of excess fat accumulation, and therefore the purview of endocrinologists etc. up until about the 60s, after which it became an eating disorder and psychological in nature (e.g., "people get fat because they don't control how much they eat").