Decreased bone strength characterises Osteoporosis. Skeletal fragility is
enhanced in this condition and hence greater are the risks of acquiring
fractures. More than 300 million people in India suffer osteoporosis. A low
bone density is one of the most important predisposing factors for osteoporotic
fractures. A diagnosis of osteoporosis is most commonly made by measuring the
Bone mineral density (BMD). Building bone density in
children prevents osteoporosis in later life.
Vitamin D is essential for skeletal
maintenance. It enhances calcium absorption; reduces
losses of calcium from the body and promotes calcium deposition into bone.
Researches embarked on a quest to find if supercharging levels of vitamin D in
healthy children encouraged their bones to lay down greater amounts of calcium.
Theoretically this could prevent them from developing osteoporosis on aging.
Existing literature was
searched for; details from randomised controlled trials were picked up and
analysed. The results were published in Cochrane Database of Systematic Reviews
2010, Issue 10.
"Vitamin D supplementation
had no statistically significant effects on bone density at any site in healthy
children. There was, however, some indication that children who had low levels
of vitamin D in their blood might benefit from supplementation," says the study
leader Dr Tania Winzenberg, from the Menzies Research Institute Tasmania.
Healthy children with normal
vitamin D levels do not benefit from vitamin D supplements. Vitamin D
supplements can bring no improvement in bone density at the hip, lumbar spine,
forearm or in the body as a whole in these healthy children.
What we now require are
detailed studies to find out whether supplements are of any utility in vitamin
D deficient children.
In brief this study
indicates that a low bone density is one of the most important predisposing
factors for osteoporotic fractures. Healthy children with normal vitamin D
levels do not benefit from vitamin D supplements in terms of BMD. Vitamin D
supplements can bring no improvement in bone density at the hip, lumbar spine,
forearm or in the body as a whole in these healthy children.
Reference: Winzenberg TM, Powell S, Shaw KA, Jones G.
Vitamin D supplementation for improving bone mineral density in children.
Cochrane Database of Systematic Reviews 2010, Issue 10. Art. No.: CD006944.
DOI: 10.1002/14651858.CD006944.pub2.
Source-Medindia