What is the basic science of all fad diets?

What is the basic science of all fad diets?

Andrea Giancoli (Registered Dietician ) gives expert video advice on: What are some popular types of fad diets?; What do all fad diets have in common?; What are some of the popular past fad diets? and more...

The macro-nutrients are nutrients that provide energy; energy in the form of calories. We only have three macro-nutrients that provide calories. Again, calories equal energy. Energy equals calories. Those are carbohydrate, fat, and protein. That's not a lot to mess around with. So, we just keep seeing different reincarnations of these same diets that keep repeating themselves over the years. Just written in a slightly different way in a book or advertised in a slightly different way. But, how much can you really do with three macro-nutrients? There's not a lot of creativity that you can find with fad diets. That's why we see a lot of them repeating over and over again. With just different names, different incarnations.