Fat is back in this ultra-low-carb, high-fat diet. Find out what foods you can eat on the keto diet plan, if the keto diet ...

To incorporate fruits into a keto diet, think of the ones lowest in net carbs (total carbohydrates minus fiber), like the ones on this list, says Jonathan Valdez, RDN, the owner of Genki Nutrition ...

With any diet you choose, make sure you're filling it with healthy foods. (Getty Images) ...