Prolonged excessive hunger can be caused by persistent stress and anxiety, bipolar disorder, manic depression, bulimia, hypoglycemia, type-2 diabetes, premenstrual syndrome, hyperthyroidism and Grave���s disease, according to The Health Site. Additional causes include genetic disorders such as Prader-Willi syndrome, possible chromosomal abnormalities and adverse conditions endured during a fetus's development in the womb. Certain medications such as corticosteroids, cyproheptadine and tricyclic antidepressants are known to cause excessive hunger.Continue Reading
Food deprivation accompanying strict diets can cause food cravings. Sometimes, the cravings are an indication that the body is lacking in certain nutrients. It can be trying to convey that it needs important vitamins and minerals found in specific foods. Skipping meals often causes hunger to reach extreme levels. Dehydration can also be mistaken for hunger, according to Hara Hagikalfa at Nutrition Style.
Excessive hunger is sometimes to be expected. For example, extreme physical exertion and pregnancy are two common causes for increased appetites. Low temperatures cause the body to crave food because it must expend more energy in an effort to regulate internal heat. If the hunger is not attributable to such events, The Health Site warns that there can be a more serious underlying condition fueling the constant desire for food.Learn more about Nutrition & Diets