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Clin Endocrinol (Oxf). 2015 May;82(5):657-62. doi: 10.1111/cen.12721. Epub 2015 Feb 12.

The prevalence of Vitamin D deficiency is higher in adult survivors of childhood cancer.

Author information

1
Department of Endocrinology, Sydney Children's Hospital, Sydney, NSW, Australia; School of Women's & Children's Health, University of New South Wales, Sydney, NSW, Australia.

Abstract

BACKGROUND:

It is unclear whether the rate of vitamin D deficiency in paediatric cancer survivors is higher than in the background population, and whether this is of pathological significance.

PATIENTS AND METHODS:

25OHD was measured in a previously studied group of 208 survivors (n = 108 paediatric 5-17 years, n = 99 adults 18-39 years) and compared with paediatric (5-17 years; n = 132) and adult controls (25-35 years; n = 1393 from the AusDiab cohort) adjusted for age and gender. Relationships with treatment factors (irradiation, bone marrow transplantation and intensity of treatment) along with overweight/obesity (defined by BMI), abdominal adiposity (waist:height ratio >0·5) and hyperinsulinism or abnormal glucose tolerance (HI/aGT) were sought.

RESULTS:

25OHD concentrations were similar in paediatric survivors compared with controls (64·3 ± 21·6 nmol/l vs 66·3 ± 22·8 nmol/l), with no effect of age or gender. Adjusted for gender, rates of 25OHD deficiency (<50 nmol/l) were higher in adult survivors compared with AusDiab controls (42·4% vs 20·8%; P < 0·001). Apart from time since diagnosis (P = 0·03), no relationship with treatment factors was detected. In multivariate regression analysis, abdominal adiposity (P = 0·001), but not overweight/obesity by BMI status nor HI/aGT, was associated with significantly lower 25OHD concentrations.

CONCLUSIONS:

Adult survivors are at increased risk of abnormalities in vitamin D compared to the background population, probably reflecting longer time since diagnosis. Like others, we have not identified any contributory treatment-related factors. Vitamin D deficiency does not appear to be associated with the development of abnormal glucose tolerance in this population.

PMID:
25598519
DOI:
10.1111/cen.12721
[Indexed for MEDLINE]

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