Rorick M H, Scrimshaw N S
J Gerontol. 1979 Mar;34(2):191-6. doi: 10.1093/geronj/34.2.191.
Milk intolerance was investigated in 87 healthy elderly individuals with a mean age of 77 years who were given 240 ml of a chocolate dairy drink twice in one week with a light lunch. No significant differences in symptomatic responses distinguished the subjects consuming a lactose-free (LF) drink from those consuming a drink containing 4.5% lactose (LC) under double-blind study conditions. Breath hydrogen analysis during lactose tolerance testing identified 23 malabsorbers, none of whom responded exclusively to the LC drink, although five were symptomatic on both days, and two had symptoms only on the day the LF drink was served. A similar percentage of absorbers (72%) and malabsorbers (70%) were asymptomatic on both days. Factors other than lactose malabsorption appeared to be responsible for the symptoms of intolerance reported, and most may have been psychosomatic in origin.
对87名平均年龄为77岁的健康老年人进行了牛奶不耐受情况的调查。这些老年人在一周内分两次饮用240毫升巧克力奶饮料，并搭配清淡午餐。在双盲研究条件下，饮用无乳糖（LF）饮料的受试者与饮用含4.5%乳糖（LC）饮料的受试者在症状反应上没有显著差异。乳糖耐量测试期间的呼气氢分析确定了23名吸收不良者，其中没有一人仅对LC饮料有反应，尽管有5人在两天都出现了症状，还有两人仅在饮用LF饮料的当天出现症状。在两天中，吸收良好者（72%）和吸收不良者（70%）出现无症状的比例相似。乳糖吸收不良以外的因素似乎是报告的不耐受症状的原因，而且大多数可能源于心身问题。
