Keywords

lactase deficiency, lactase nonpersistence, lactose intolerance, nutritional counseling

 

Authors

  1. Carter, Sherry L. PhD, RN, WHNP-BC
  2. Attel, Susan MSN, BSN, FNP

Abstract

Approximately 70% of the world's population is lactase deficient. This article reviews the evolutionary history of lactase deficiency, recent recommendations to establish screening, and clinical practice guidelines for increased diagnosis of this important, yet often misunderstood condition of malabsorption.