消化系统主要包括食管、胃、肠、肝、胆、胰等。人到老年,消化系统会出现形态和功能方面程度不同的退行性变化,从而影响老年人的健康。(一)牙齿。人到老年,牙齿已经过了数十年的磨损,再加上酸、甜、冷、热食物的刺激,容易形成龋齿。牙周组织老化,牙龈萎缩,牙齿松动脱落,加上咀嚼肌退化,故老年人的咀 Digestive system mainly includes the esophagus, stomach, intestine, liver, gallbladder, pancreas and so on. People to the elderly, the digestive system will appear morphological and functional aspects of the degree of degenerative changes, thus affecting the health of the elderly. (A) teeth. People to the elderly, the teeth have been worn for decades, coupled with acid, sweet, cold, hot food stimuli, easy to form dental caries. Periodontal aging, gingival recession, loose teeth off, coupled with masticatory muscle degeneration, so the elderly Tsui