There can be a few different reasons why you might be feeling hungry all the time. One of the most common causes is not eating enough protein and fiber in your diet. Additionally, having a diet that is high in refined carbs can cause your blood sugar to spike and crash, leading to an increase in hunger and cravings. Other causes could include lack of sleep, stress, medication, pregnancy, and thyroid problems. If you’re still struggling with constant hunger, it’s a good idea to speak to a health professional.