What Causes Polyphagia?

Polyphagia, also called hyperphagia, is the medical term for continual excessive hunger without an obvious cause such as excessive activity or a long duration between meals. The desire to consume food does not go away, or returns quickly, after eating. Though excessive hunger sometimes happens when an individual exercises a lot or does not eat a diet with sufficient protein and fiber, when it is solely due to causes like these, the desire to eat relents once the necessary adjustments are made (e.g., reducing exercise, getting more protein and fiber). True polyphagia can be caused by genetic disorders, neurological disorders, or disease.