Lactose intolerance overview: Difference between revisions
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==Overview== | ==Overview== | ||
Lactose intolerance is the term used to describe a decline in the level of [[lactase]], an [[enzyme]] needed for proper [[Metabolism|metabolization]] of [[lactose]] (a sugar that is a constituent of milk and other dairy products), in human beings. | Lactose intolerance is the term used to describe a decline in the level of [[lactase]], an [[enzyme]] needed for proper [[Metabolism|metabolization]] of [[lactose]] (a sugar that is a constituent of milk and other dairy products), in human beings. | ||
==Classification== | |||
There are three major types of lactose intolerance.<ref name="Melvin"> [http://aappolicy.aappublications.org/cgi/content/full/pediatrics;118/3/1279|Melvin B. Heyman. ''Lactose Intolerance in Infants, Children, and Adolescents''. PEDIATRICS Vol. 118 No. 3 September 2006, pp. 1279-1286 (doi:10.1542/peds.2006-1721)]</ref> They are primary lactose intolerance, secondary lactose intolerance and congenital lactase deficiency. | |||
==Epidemiology and Demographics== | ==Epidemiology and Demographics== | ||
Revision as of 19:43, 25 March 2013
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Lactose intolerance is the term used to describe a decline in the level of lactase, an enzyme needed for proper metabolization of lactose (a sugar that is a constituent of milk and other dairy products), in human beings.
Classification
There are three major types of lactose intolerance.[1] They are primary lactose intolerance, secondary lactose intolerance and congenital lactase deficiency.
Epidemiology and Demographics
An estimated 70%[2] of adult humans are considered lactose intolerant, it is uncommon in healthy northern westerners and a few others groups.
References
- ↑ B. Heyman. Lactose Intolerance in Infants, Children, and Adolescents. PEDIATRICS Vol. 118 No. 3 September 2006, pp. 1279-1286 (doi:10.1542/peds.2006-1721)
- ↑ Kretchmer N. Lactose and lactase: a historical perspective. Gastroenterology, 1971;61, 805–813