Hm, nu er det jo over en måned siden jeg skrev det, men jeg kan da forsøge at (gen)finde en kilde...
Edit:
Wikipedia har en lille tabel over
laktoseintolerance fordelt på befolkningsgrupper (dog er nogle af tallene baseret på undersøgelser med et ret begrænset antal forsøgspersoner).
Her er en lille bid fra
Foodreactions.org:
Citat:
The prevalence of primary lactose deficiency varies according to race. In a review by Gudmand-Hoyer E in published on The American Journal of Clinical Nutrition (1994), it is lowest in Scandinavia and Northwest Europe (3-8%) and close to 100% in most of Southeast Asia. In Europe the frequency increases in the southern and eastern directions, reaching 70% in southern Italy and Turkey. There is also a high prevalence of lactose maldigestion in the people of Africa with the exception of cattle-raising nomads. Moreover, studies conducted by Scrimshaw and Murray and Sahi review the prevalence of lactose maldigestion globally. The prevalence is above 50% in South America, Africa, and Asia, reaching almost 100% in some Asian countries. In the United States, the prevalence is 15% among whites, 53% among Mexican-Americans and 80% in the Black population. In Europe it varies from around 2% in Scandinavia to about 70% in Sicily (see map below). Australia and New Zealand have prevalence of 6% and 9% respectively. In general, it can be stated that about two thirds of the world adult population is lactase non-persistent.
Wikipedia om "lactase-persistence"-begrebet.
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