Peanut butter can help paleo diet if eaten as part of an overall healthy diet plan but there are some things you should know before including peanut butter into your paleo diet plan. Peanut butter contains sugar, salt, fat, carbohydrate. It also contains protein which helps build muscle mass. But if you are following strict paleo diet then there are no other substitutes except almond butter. You can also try using almond flour instead as its similar taste like peanut butter but without any carbohydrates from peanuts.