Gastroenterologist
Changes in appetite, bowel habit, weight loss or overt symptoms like nausea, vomiting, heartburn, abdominal pain, blood loss, to name a few, may all point to a serious underlying condition of the digestive tract. This is especially true if these symptoms are of recent onset and if >50 years of age. Gastroenterologists specialise in the diagnosis and treatment of conditions of the digestive system.