TABLE 3-1, Winter Low 25OHD Levels and Summer High 25OHD Levels Around the World - Dietary Reference Intakes for Calcium and Vitamin D - NCBI Bookshelf

Warning: The NCBI web site requires JavaScript to function. more...

TABLE 3-1Winter Low 25OHD Levels and Summer High 25OHD Levels Around the World

Location (Latitude)	Winter Baseline	Summer High
Toronto, Canada^a 43°N	35 nmol/L	50 nmol/L^b
Tasmania, Australia^c 43°S	40 nmol/L	62 nmol/L
Estonia, northern Europe^d 59°N	44 nmol/L	59 nmol/L
Salford/Manchester, UK^e 53°N	46 nmol/L	71 nmol/L
Geelong region, Australia^c 38°S	57 nmol/L	93 nmol/L
Omaha, USA^f 41°N	68 nmol/L	86 nmol/L

a: Gozdik et al., 2009.
b: high value recorded in autumn.
c: van der Mei et al., 2007.
d: Kull et al., 2009.
e: Berry et al., 2009.
f: Rapuri et al., 2002.

From: 3, Overview of Vitamin D

Cover of Dietary Reference Intakes for Calcium and Vitamin D

Dietary Reference Intakes for Calcium and Vitamin D.

Institute of Medicine (US) Committee to Review Dietary Reference Intakes for Vitamin D and Calcium; Ross AC, Taylor CL, Yaktine AL, et al., editors.

Washington (DC): National Academies Press (US); 2011.

Copyright © 2011, National Academy of Sciences.

NCBI Bookshelf. A service of the National Library of Medicine, National Institutes of Health.