Obesity can lead to a lack of vitamin D circulating in the body, according to a study led by the UCL Institute of Child Health (ICH). Efforts to tackle obesity should thus also help to reduce levels of vitamin D deficiency in the population, says the lead investigator of the study, Dr Elina Hypponen.
While previous studies have linked vitamin D deficiency with obesity, the ICH-led paper, published in the journal PLOS Medicine, sought to establish the direction of causality i.e. whether a lack of vitamin D triggers a weight gain, or whether obesity leads to the deficiency.