Vitamin K preserves mobility

Low levels of vitamin K have a link to physical disability in older adults. This is the first study to compare vitamin K levels to mobility.

In this study, doctors gave 1,323 men and women, aged 70 to 79, mobility tests every six months for up to 10 years. The tests measured ability to walk a quarter mile or climb 10 steps without resting.

Men or women with vitamin K (as phylloquinone) levels lower than 0.5 nanomoles per liter of blood (nmol/L) were 1.5 times more likely to develop mobility limitations, and nearly two times as likely to develop disability, as those whose vitamin K levels were at least 1.0 nmol/L. 

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