Uenishi Kazuhiro, Yamaura Tomoko
Kagawa Nutrition University.
Clin Calcium. 2010 Mar;20(3):424-9.
Lactose, a disaccharide in milk or dairy products, is known to promote calcium absorption. The enzyme lactase is needed to digest lactose. Although lactase is secreted normally in childhood, the secretion is decreased with growth, and the activity becomes lower in adulthood. When the activity of lactase is low, lactose passes intact the small intestine and reaches the large intestine, could cause unpleasantness such as diarrhea and stomach ache. This is called lactose intolerance. In this paper, we discuss promotion of calcium absorption by lactose, lactose intolerance, and bone health.
乳糖是牛奶或乳制品中的一种二糖，已知它能促进钙的吸收。消化乳糖需要乳糖酶。虽然乳糖酶在儿童时期会正常分泌，但随着年龄增长，其分泌量会减少，在成年期活性也会降低。当乳糖酶活性较低时，乳糖会完整地通过小肠进入大肠，可能会引起腹泻和胃痛等不适。这被称为乳糖不耐受。在本文中，我们将讨论乳糖对钙吸收的促进作用、乳糖不耐受以及骨骼健康。
