In the gastrointestinal tract, prophylactic administration of ghrelin inhibits the development of experimental ulcers of gastric mucosa induced by ethanol [22], stress [23], and alendronate [24], as well as accelerates the healing of ulcers in the upper part of gastrointestinal tract induced by acetic acid [25], ethanol [26], or cysteamine [27]. Here, GHRL is linked to ulcer disease.