What are the short-term dangers of fad diets?

What are the short-term dangers of fad diets?

Andrea Giancoli (Registered Dietician ) gives expert video advice on: What are the short-term dangers of fad diets?; What are the long-term dangers of fad diets?; Are fad diets dangerous if I have heart disease? and more...

Usually on a lot of these fad diets, the calorie intake is so restricted. Some of them if you are doing a fast or just a liquid diet, your gut doesn't have a chance to do what it needs to do, so it could stop working properly. You could suffer constipation, you could suffer pain when you do start eating again, and also all other kinds of gastrointestinal problems can happen. Also you may have bad breath, which may not be so great for the people around you, because when you restrict calories like that your body goes into something called ketosis and produces acidic bodies that give you bad breath.