BOSTON — Low levels of circulating vitamin K are linked to increased risk of mobility limitation and disability in older adults, identifying a new factor to consider for maintaining mobility and independence in older age, according to a study led by researchers at the Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University.
The study, published online in May in advance of print in the Journal of Gerontology: Medical Sciences, is the first to evaluate the association between biomarkers of vitamin K status and the onset of mobility limitation and disability in older adults.
“Because of our growing population of older people, it’s important for us to understand the variety of risk factors for mobility disability,” said Kyla Shea, first and corresponding author and a nutrition scientist in the Vitamin K Laboratory at the Jean Mayer USDA Human Nutrition Research Center on Aging (HNRCA) at Tufts University.
“Low vitamin K status has been associated with the onset of chronic diseases that lead to disability, but the work to understand this connection is in its infancy. Here, we’re building on previous studies that found that low levels of circulating vitamin K are associated with slower gait speed and a higher risk of osteoarthritis,” she continued.