4. Atkins 40
The Atkins 20 has proven to be an effective diet, but there’s a better version of it now. You got that right, the Atkins 40. It’s a program that is less restrictive than its previous iteration. If you also can’t jump into the keto bandwagon, then this is the best option for you. Like the ketogenic diet, this is backed by science and lots of research. So if you think that the other diets are myths, then try this one out.