Despite being viewed by some as the “bad” macro, fat is essential for your body. Even aside from its necessity in biological processes, it also plays an important role in making sure you stay full—making it less likely that you will overeat and consume extra calories. It’s what makes low-carb eating sustainable. Without enough fat to keep you full, your body will not be able to maintain this way of eating. Especially in the transition to keto, consuming extra fat helps your body learn how to burn fat for fuel instead of the carbs that it’s used to. I suggest thinking of it like this: on keto, keep carbs low, make sure you reach your recommended protein goal each day, and then add fat to satiety.