Vitamin D and health in adults in Australia and New Zealand : a position statement

Nowson, Caryl A., McGrath, John J., Ebeling, Peter R., Haikerwal, Anjali, Daly, Robin M., Sanders, Kerrie M., Seibel, Markus J. and Mason, Rebecca S. 2012, Vitamin D and health in adults in Australia and New Zealand : a position statement, Medical journal of Australia, vol. 196, no. 11, pp. 1-7.

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Title Vitamin D and health in adults in Australia and New Zealand : a position statement
Author(s) Nowson, Caryl A.
McGrath, John J.
Ebeling, Peter R.
Haikerwal, Anjali
Daly, Robin M.
Sanders, Kerrie M.
Seibel, Markus J.
Mason, Rebecca S.
Journal name Medical journal of Australia
Volume number 196
Issue number 11
Start page 1
End page 7
Total pages 7
Publisher Australasian Medical Publishing Company
Place of publication Strawberry Hills, N. S. W.
Publication date 2012-06-18
ISSN 0025-729X
Summary The prevalence of vitamin D deficiency varies, with the groups at greatest risk including housebound, community-dwelling older and/or disabled people, those in residential care, dark-skinned people (particularly those modestly dressed), and other people who regularly avoid sun exposure or work indoors.

Most adults are unlikely to obtain more than 5%–10% of their vitamin D requirement from dietary sources. The main source of vitamin D for people residing in Australia and New Zealand is exposure to sunlight.

A serum 25-hydroxyvitamin D (25-OHD) level of ≥ 50 nmol/L at the end of winter (10–20 nmol/L higher at the end of summer, to allow for seasonal decrease) is required for optimal musculoskeletal health.

Although it is likely that higher serum 25-OHD levels play a role in the prevention of some disease states, there is insufficient evidence from randomised controlled trials to recommend higher targets.

For moderately fair-skinned people, a walk with arms exposed for 6–7 minutes mid morning or mid afternoon in summer, and with as much bare skin exposed as feasible for 7–40 minutes (depending on latitude) at noon in winter, on most days, is likely to be helpful in maintaining adequate vitamin D levels in the body.

When sun exposure is minimal, vitamin D intake from dietary sources and supplementation of at least 600 IU (15 μg) per day for people aged ≤ 70 years and 800 IU (20 μg) per day for those aged > 70 years is recommended. People in high-risk groups may require higher doses.

There is good evidence that vitamin D plus calcium supplementation effectively reduces fractures and falls in older men and women.
Language eng
Field of Research 111716 Preventive Medicine
Socio Economic Objective 920412 Preventive Medicine
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2012, Australasian Medical Publishing Co
Persistent URL http://hdl.handle.net/10536/DRO/DU:30046124

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