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许多研究均表明,老年人群中普遍存在营养不良,但尚未引起广泛重视.本文就衰老过程中的胃肠道病理生理变化作一简介.常量营养素的消化与吸收脂肪吸收不良:Werner与Hambraeus对8名无症状老年(67～72岁)和6名成年(34～42岁)人给予85～90g脂肪餐,证明粪脂排泄量相同(3～7g).然而,当脂肪量增加到115～120g时,多数老年人的粪脂排泄量增至12g以上,成年对照者则为3～9g.这说明高脂肪摄入时,老年人肠腔内脂肪消化不良.通过对2名老年女性进一步研究,发现脂肪量分成4～6餐进食时,大便中脂肪排泄仍在正常范围以内,提示老年摄食脂肪以分次为宜.
Many studies have shown that malnutrition is widespread in the elderly population, but has not yet attracted much attention.This article gives an introduction to the pathophysiological changes of the gastrointestinal tract in the process of aging.Dietary nutrient digestion and absorption of fat malabsorption: Werner and Hambraeus 8 Eighty to ninety grams of fat meals were given to asymptomatic seniors (67-72 years) and six adults (34-42 years), demonstrating the same level of fecal fat excretion (3-7 g). However, when fat mass increased to 115-120 g , Most of the elderly fecal lipid excretion increased to 12g above, while the adult control was 3 ~ 9g.This shows that high fat intake, the elderly intestine fat indigestion.Through the further study of two elderly women, Found that the amount of fat is divided into 4 to 6 meals, stool fat excretion is still within the normal range, suggesting that elderly fats to sub-grading appropriate.