10 Signs of Lactose Intolerance

9. Weight Loss

Sometimes, lactose intolerance remains undiagnosed for years, either because the individual chooses to deal with the symptoms on her own, or a doctor misdiagnoses the condition as any number of illnesses that cause the same symptoms (such as IBS or Crohn's disease). Recurrent bouts of indigestion may cause severe diarrhea, which may lead to weight loss. Prolonged nausea can also reduce appetite or make an individual unwilling to eat as much for fear of repercussions.