Encyclopedia of Evolutionary Psychological Science

Living Edition
| Editors: Todd K. Shackelford, Viviana A. Weekes-Shackelford

Lactose Intolerance

  • James R. Donovan
Living reference work entry
DOI: https://doi.org/10.1007/978-3-319-16999-6_834-1

Definition

Lactose intolerance commonly, but not universally, is defined as the inability to digest lactose (found in milk and other dairy products) that often results in symptoms which cause individuals to experience discomfort or pain (Deng et al. 2015; Amiri et al. 2015; Sahi 1978; Misselwitz et al. 2013).

Introduction

Milk and other dairy products are often fed to newborn children during infancy to provide nutrients that assist in growth and development. However, not all humans have the ability to digest milk, specifically a component in milk and dairy products called lactose, without experiencing pain or discomfort. The inability to digest lactose is due to the individual lacking the enzyme lactase that is found in the intestine that allows lactose to be broken down (Deng et al. 2015; Amiri et al. 2015). Some common symptoms of lactose intolerance are flatus, abdominal pain, bloating, stomach rumbling, diarrhea, nausea, and constipation, among others (Deng et al. 2015; Szilagyi 2015a...

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References

  1. Amiri, M., Diekmann, L., von Köckritz-Blickwede, M., & Naim, H. Y. (2015). The diverse forms lactose intolerance and the putative linkage to several cancers. Nutrients, 7(9), 7209–7230.  https://doi.org/10.3390/nu7095332.CrossRefPubMedPubMedCentralGoogle Scholar
  2. Burger, J., Kirchner, M., Bramanti, B., Haak, W., & Thomas, M. G. (2007). Absence of the lactase-persistence-associated allele in early Neolithic Europeans. Proceedings of the National Academy of Sciences, 104(10), 3736–3741.  https://doi.org/10.1073/pnas.0607187104.CrossRefGoogle Scholar
  3. Deng, Y., Misselwitz, B., Dai, N., & Fox, M. (2015). Lactose intolerance in adults: Biological mechanism and dietary management. Nutrients, 7(9), 8020–8035.  https://doi.org/10.3390/nu7095380.CrossRefPubMedPubMedCentralGoogle Scholar
  4. Heaney, R. P. (2013). Dairy intake, dietary adequacy, and lactose intolerance. Advances in Nutrition, 4(2), 151–156.  https://doi.org/10.3945/an.112.003368.CrossRefPubMedPubMedCentralGoogle Scholar
  5. Mattar, R., de Campos Mazo, D. F., & Carrilho, F. J. (2012). Lactose intolerance: Diagnosis, genetic, and clinical factors. Clinical and Experimental Gastroenterology, 5, 113–121.  https://doi.org/10.2147/CEG.S32368.CrossRefPubMedPubMedCentralGoogle Scholar
  6. Misselwitz, B., Pohl, D., Frühauf, H., Fried, M., Vavricka, S. R., & Fox, M. (2013). Lactose malabsorption and intolerance: Pathogenesis, diagnosis and treatment. United European Gastroenterology Journal, 1(3), 151–159.  https://doi.org/10.1177/2050640613484463.CrossRefPubMedPubMedCentralGoogle Scholar
  7. Sahi, T. (1978). Dietary lactose and the aetiology of human small-intestinal hypolactasia. Gut, 19(11), 1074–1086.CrossRefGoogle Scholar
  8. Swagerty, D., Walling, A., & Klein, R. (2003). Lactose intolerance. American Family Physician, 65(9), 1845–1850.Google Scholar
  9. Szilagyi, A. (2015a). Adaptation to lactose in lactase non persistent people: Effects on intolerance and the relationship between dairy food consumption and evaluation of diseases. Nutrients, 7(8), 6751–6779.  https://doi.org/10.3390/nu7085309.CrossRefPubMedPubMedCentralGoogle Scholar
  10. Szilagyi, A. (2015b). Adult lactose digestion status and effects on disease. Canadian Journal of Gastroenterology and Hepatology, 29(3), 149–156.CrossRefGoogle Scholar

Copyright information

© Crown 2019

Authors and Affiliations

  1. 1.Nipissing UniversityNorth BayCanada

Section editors and affiliations

  • Steven Arnocky
    • 1
  1. 1.Department of Psychology, Faculty of Arts and SciencesNipissing UniversityNorth BayCanada