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