Less muscle and insulin resistance for children of vitamin D deficient mothers – Jan 2011

Maternal vitamin D status during pregnancy and body composition and cardiovascular risk markers in Indian children: the Mysore Parthenon Study.

AM J CLIN NUTR () (2011)
Ghattu V Krishnaveni, Sargoor R Veena, Nicola R Winder, Jacqueline C Hill, Kate Noonan, Barbara J Boucher, Samuel C Karat and Caroline Hd Fall
Epidemiology Research Unit, CSI Holdsworth Memorial Hospital, Mysore, India.

BACKGROUND: Metabolic consequences of vitamin D deficiency have become a recent research focus. Maternal vitamin D status is thought to influence musculoskeletal health in children, but its relation with offspring metabolic risk is not known.

OBJECTIVE: We aimed to examine the association between maternal vitamin D status and anthropometric variables, body composition, and cardiovascular risk markers in Indian children.

DESIGN: Serum 25-hydroxyvitamin D [25(OH)D] concentrations were measured at 28-32 wk gestation in 568 women who delivered at Holdsworth Memorial Hospital, Mysore, India. Anthropometric variables, glucose and insulin concentrations, blood pressure, and fasting lipid concentrations were measured in the offspring at 5 and 9.5 y of age. Muscle-grip strength was measured by using a hand-held dynamometer at age 9.5 y. Arm-muscle area was calculated as a measure of muscle mass. Fasting insulin resistance was calculated by using the homeostasis model assessment equation.

RESULTS: Sixty-seven percent of women had vitamin D deficiency [serum 25(OH)D concentration <50 nmol/L]. At ages 5 and 9.5 y, children born to vitamin D-deficient mothers had smaller arm-muscle area in comparison with children born to mothers without deficiency (P < 0.05). There was no difference in grip strength between offspring of women with and without vitamin D deficiency. At 9.5 y, children of vitamin D-deficient mothers had higher fasting insulin resistance than did children of nondeficient women (P = 0.04). There were no associations between maternal vitamin D status and other offspring risk factors at either age.

CONCLUSION: Intrauterine exposure to low 25(OH)D concentrations is associated with less muscle mass and higher insulin resistance in children. DOI: 10.3945/ajcn.110.003921 * PMID: 21228264

See also VitaminDWiki

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