Tag Archives: vitamin K

Study: Low vitamin K associated with higher risk of death

Photo: Penn State via Flickr

Be like Popeye. Eat your spinach. And kale. And lettuce. That’s the takeaway from a recent multi-ethnic meta-analysis by researchers at Tufts University.

While the study didn’t prove cause and effect, it did show that the risk of death was nearly 20% higher for older adults with low vitamin K levels compared to those whose levels were adequate. The results suggest vitamin K, a nutrient found in leafy greens and vegetable oils, may have protective health benefits as we age, according to the researchers.

The meta-analysis involved nearly 4,000 Americans between the ages of 54 and 76. One-third of the participants were non-white. Researchers at the Jean Mayer USDA Human Nutrition Research Center on Aging (USDA HNRCA) and Tufts Medical Center categorized participants according to their vitamin K blood levels. They then compared the risk of heart disease and risk of death across the categories over approximately 13 years of follow-up. Continue reading

Vitamin K deficiency linked to risk of mobility loss in older adults

Photo: Víctor Hugo Hernández D. via Flickr

Here’s another reason to eat your broccoli: It’s a great source of Vitamin K that may help decrease the risk of mobility loss and independence.

A recent study from Tufts University found that low circulating levels of this vitamin are tied to an increased risk of mobility limitation and disability in older adults. Older adults with low circulating vitamin K levels were nearly 1.5 times more likely to develop mobility limitations and nearly twice as likely to develop mobility disability compared with those showing sufficient levels, regardless of gender. Continue reading