Paleo works for some patients for maintenance. Atkins works for some patients for maintenance. Even Bill Clinton’s whole food, vegan diet works for some patients for maintenance, though absolutely not recommended. But if you want to lose weight, you’ve got to cut your calories. To be successful, most patients need to limit their calories to 500-600 a day (you get to eat almost nothing), or they don’t see quick enough weight loss to stay motivated and put up with the deprivation that is dieting.