1. Coming in at the top amongst the many diet plans, is the South Beach diet. produced by Miami Florida based Heart Dr. Arthur Agatston, the south beach diet endorses the eating of good carbs and mono saturated fats, while asking to do without refined meals and saturated fats. The south beach diet has captivated thousands of believing followers who can swear by its ability to reduce weight and bring diabetes and cholesterol down to controllable levels.