一、肠道病变有什么症状1. 肠道病变时会食欲缺乏2. 肠道病变时会恶心、呕吐3. 肠道病变时会腹痛4. 肠道病变时会腹泻5. 肠道病变时会便秘6. 肠道病变时会大便异常7. 肠道病变时会排屁二、如何预防肠道疾病三、肠道疾病有哪些1.