Vitamin D Loss Attributed to Obesity

Obesity can lead to vitamin D deficiency, a new study indicates.

British researchers found that a 10 percent rise in body-mass index (BMI) was linked with a 4 percent drop in concentrations of vitamin D in the body. BMI is a measurement of body fat based on height and weight.

The link between BMI and vitamin D levels was found in men and women, as well as in younger and older people, the investigators noted.

The findings suggest that a higher BMI leads to lower levels of vitamin D circulating in the body, while a lack of vitamin D has only a small effect on BMI.

Efforts to tackle obesity may also help reduce levels of vitamin D deficiency.

Previous studies have linked vitamin D deficiency with obesity, but it wasn't clear whether a lack of vitamin D triggered weight gain or whether obesity led to vitamin D deficiency.

Vitamin D, which is essential for healthy bones and other functions, is produced by the skin when exposed to sunlight. It can also be obtained through foods and supplements.

Vitamin D deficiency is an active health concern around the world. While many health messages have focused on a lack of sun exposure or excessive use of sun-creams  we should not forget that vitamin D deficiency is also caused by obesity.