Vitamin D status is modestly associated with glycemia and indicators of lipid metabolism in French-Canadian children and adolescents.
In addition to its recognized role in bone health, recent studies point to vitamin D functions in other tissues, including the pancreas. We tested the association between the vitamin D status and glucose and lipid homeostasis in a school-based, cross-sectional survey of a representative sample of youth. We measured fasting plasma insulin, glucose, total cholesterol (TC), triglycerides (TG), HDL cholesterol (HDL-C) apolipoproteins (apo) A1 and B, and 25-hydroxyvitamin D [25(OH)D] concentrations in 878 boys and 867 girls. The 25(OH)D concentrations (mean +/- SD) were 45.9 +/- 12.2 nmol/L in boys and 45.9 +/- 13.0 nmol/L in girls. More than 93% of youth had suboptimal (<75 nmol/L) vitamin D concentrations. There was a slightly lower glycemia, -0.5% (P = 0.015) and -0.4% (P = 0.025), and homeostasis model assessment of insulin resistance, -2.8% (P = 0.043) and -2.3% (P = 0.050), for each 10-nmol/L increase in plasma 25(OH)D in boys and girls, respectively. In contrast, in girls only there were modest increases in plasma TC (1.1%; P = 0.017), TG (2.9%; P = 0.004), apoA1 (1.2%; P < 0.001), and apoB (1.5%; P = 0.023). We observed no association between the presence of at least 2 cardiometabolic risk factors (borderline/unfavorable fasting concentrations of apoB, HDL-C, TG, insulin, and glucose) and 25(OH)D concentrations in either boys or girls. Although the observed associations between 25(OH)D concentrations and fasting glucose, and variables of lipid metabolism are modest, they may have a potential long-term impact on cardiovascular risk.
Delvin
Edgard E
EE
Department of Clinical Biochemistry, CHU Sainte-Justine, Montreal, Canada. edgard.delvin@recherche-ste-justine.qc.ca
Lambert
Marie
M
Levy
Emile
E
O'Loughlin
Jennifer
J
Mark
Sean
S
Gray-Donald
Katherine
K
Paradis
Gilles
G
D000293:Adolescent; D016632:Apolipoprotein A-I / Q000097:blood; D001055:Apolipoproteins B / Q000097:blood; D001786:Blood Glucose; D002648:Child; D002784:Cholesterol / Q000097:blood; D003430:Cross-Sectional Studies; D005260:Female; D005602:France / Q000208:ethnology; D006801:Humans; D006943:Hyperglycemia / Q000097:blood / Q000453:epidemiology / Q000209:etiology*; D007333:Insulin Resistance; D008055:Lipids / Q000097:blood*; D008297:Male; D011792:Quebec / Q000453:epidemiology; D012737:Sex Factors; D014280:Triglycerides / Q000097:blood; D014807:Vitamin D / Q000031:analogs & derivatives* / Q000097:blood; D014808:Vitamin D Deficiency / Q000097:blood / Q000150:complications* / Q000453:epidemiology
D016632:Apolipoprotein A-I; D001055:Apolipoproteins B; D001786:Blood Glucose; D008055:Lipids; D014280:Triglycerides; D014807:Vitamin D; D002784:Cholesterol; C104450:25-hydroxyvitamin D