Obesity Can Lead to Vitamin D Deficiency, Study Finds
A new study shows that obesity can lead to a vitamin D deficiency.Vitamin D, which is vital for the body to maintain healthy bones, is created in the skin from sun exposure. People can also get vitamin D from food and supplements.
A deficiency in vitamin D in adults can cause osteomalacia, resulting in weak bones, according to the Office of Dietary Supplements, National Institutes of Health. Some people may have bone pain and muscle weakness but these symptoms are often subtle and go undetected.
Although doctors have known about a link between obesity and vitamin D deficiency, it was uncertain whether one condition was triggering the other.
Researchers from University College London say they have established that obesity leads to the deficiency, according to a news release.
"Vitamin D deficiency is an active health concern around the world,” said Dr. Elina Hypponen, the study’s lead researcher from the UCL Institute of Child Health. “While many health messages have focused on a lack of sun exposure or excessive use of suncreams, we should not forget that vitamin D deficiency is also caused by obesity."Researchers used genetic markers from about 42,000 participants to investigate the link between body mass index and genes associated with the synthesis and metabolism of vitamin D, the news release states. They also confirmed associations between vitamin D and BMI among another group of 123,000 people.
They found that for every 10 percent increase in BMI, there was a 4 percent drop in concentrations of vitamin D in the body.
“Overall, the findings suggest that a higher BMI leads to lower levels of available vitamin D, while the effect of a lack of vitamin D on BMI appears to be very small,” the release states.
Hypponen said the study highlights the “importance of monitoring and treating vitamin D deficiency in people who are overweight or obese, in order to alleviate health effects caused by a lack of vitamin D.”
Sources: Office of Dietary Supplements, National Institutes of Health, University College London news release
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