why am i so hungry all of a sudden

Sudden hunger can have several causes including diet, hormone changes, stress, lack of sleep, dehydration, or medical conditions. Some common reasons are eating meals low in protein or fiber, high intake of refined carbs, stress triggering hunger hormones like cortisol, insufficient sleep increasing hunger hormones like ghrelin, dehydration (sometimes thirst is mistaken for hunger), and hormonal fluctuations (such as during menstrual cycles or menopause). Medical issues such as diabetes, hyperthyroidism, or low blood sugar can also cause sudden and excessive hunger. Eating balanced meals with protein, fiber, and healthy fats, staying hydrated, managing stress, and getting enough sleep can help regulate hunger. If hunger is persistent and unexplained, consulting a healthcare provider is advised to rule out underlying health problems.