Vitamin D supplements could help fight diabetes, says a New Zealand researcher. She found that South Asian women with insulin resistance improved markedly after taking the supplements.
Pamela von Hurst, a nutrition lecturer at the Institute of Food, Nutrition and Human Health at Albany, conducted the study for her PhD thesis.
Ms von Hurst says while diet and exercise play a major part in the onset of type-2 diabetes, her findings reinforce the importance of vitamin D from the sun and supplements to prevent type-2 diabetes, which has reached epidemic rates in New Zealand.
She also found evidence of vitamin D increasing bone strength in older women.
Initial screening of 235 Auckland women from India, Pakistan and Sri Lanka aged 20 and older, revealed 47 per cent were insulin deficient and 84 per cent were vitamin D deficient. The 81 recruited for the study were split into two groups for a randomised controlled trial and given a vitamin D supplement or placebo.
As well as an improvement in insulin resistance among those who took vitamin D for six months, Ms Von Hurst says post-menopausal women in the study also showed a reduced rate of bone breakdown.
Ms Von Hurst undertook the study because South Asian women are known to have a higher predisposition to developing health conditions such as diabetes and cardiovascular disease, yet have not been the subject of similar previous research. New Zealand's Indian population has risen from 60 000 in 2001 to more than 107 000.