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Vitamin D intake recommendations from IOF differ from IOM

Posted Dec 06 2010 12:00am

IOFbonehealth.org - On November 30, 2010, the Institute of Medicine of the National Academy of Sciences (IOM) in the US released new recommendations on daily reference intakes for vitamin D and calcium across all ages. The report is based on available evidence in the literature, with higher quality studies supporting the role of these nutrients on bone health. Vitamin D deficiency is an important health issue to address as it has been linked to the pathogenesis of osteoporosis and hip fractures as well as other skeletal and non-skeletal disorders.

The IOM recommendations for the daily reference intakes on vitamin D have increased since their last recommendations in 1997, and the International Osteoporosis Foundation (IOF) commends IOM for their effort in helping to reduce the burden of vitamin D deficiency, by increasing their reference values.

In April 2010, IOF published global recommendations for vitamin D in older adults, which advised higher daily intakes in this age category of 800 to 1000 IU/day. It is worth noting that the repletion dose will vary among individuals according to their starting level, their BMI, their effective sun exposure, and other unidentified factors. These recommended intakes fall well below the upper safe boundaries for vitamin D intake indicated by the IOM of 4000 IU per day for this age group.

Importantly, although the IOM vitamin D recommendations may be adequate for most average risk seniors, they will not likely cover the needs of high risk seniors. These include obese individuals, those with osteoporosis, those with limited sun exposure (institutionalized, homebound), those experiencing malabsorption, those residing in regions known to be at high risk for vitamin D deficiency such as the Middle East and South Asia, and immigrants from such regions living in Europe. To ensure that vitamin D need is met in high-risk elders, IOF recommends measuring their 25-hydroxyvitamin D level (25OHD), supplementing with the amount of vitamin D estimated to bring their level up to 75nmol/L, then re-measuring to verify that the individual had enough vitamin D supplementation to be vitamin D replete.

Statement authored by Professor Bess Dawson-Hughes and Professor Cyrus Cooper
on behalf of the International Osteoporosis Foundation

A PDF copy of the vitamin D position statement is available for free download here:

Reference: IOF position statement: vitamin D recommendations for older adults B. Dawson-Hughes, et al. (2010) Osteoporosis International Jul;21(7):1151-4. DOI 10.1007/s00198-010-1285-3

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