Obesity ‘leads to loss of vitamin D’

Study finds obesity can ‘lead to loss of vitamin D’

Should obese people be treated for vitamin D deficiency?

Obesity can lower vitamin D levels within the body, a study suggests.

The report, within the journal PLOS Medicine, analysed genetic data from 21 studies – a complete of 42,000 people.

It found every 10% rise in body mass index (BMI) – used as a trademark of body fat – resulted in a 4% drop of obtainable vitamin D within the body.

As vitamin D is stored in fatty tissue, the authors suggest the bigger storage capacity in obese people may prevent it from circulating within the bloodstream.

BMI it’s calculated by taking weight (in kilograms) and dividing it by height (in metres) squared. People with a BMI of 30 or above are considered obese.

Lead author Dr Elina Hypponen, from the University College London Institute of kid Health, said the study “highlights the significance of monitoring and treating vitamin D deficiency in those people who are overweight or obese”.

Vitamin D is made within the skin after sun exposure and will be taken in supplements.

Healthy levels are about 50 nanomole per litre – lower than 30 nanomole per litre may cause the softening and weakening of bones, resulting in rickets in children and osteomalacia in adults.

Prof David Haslam, from the National Obesity Forum, said: “Food intake and genetics all play a component in obesity – but this research is a reminder that physical activity, like walking the dog or going for a run out within the sunshine, is not really forgotten and will help correct both weight and absence of vitamin D.”