A promising research connection is not the same as a proven arthritis treatment.
An essential nutrient
Vitamin K is a fat-soluble vitamin found in leafy green vegetables, including broccoli and Brussels sprouts. It helps the body make proteins involved in blood clotting and bone health. Its possible connection with joint health has also attracted scientific interest.
What the research explored
The original journal article discussed research by Sarah Booth and Kyla Shea into vitamin K, vitamin D and physical function in older adults. Studies followed participants over several years, assessing nutrient intake or blood levels alongside walking speed and the ability to rise from a chair. Adequate levels of the two vitamins were associated with better performance on these measures.
These observations raise useful research questions, but an association does not show that taking a supplement will prevent or treat osteoarthritis. Nutrition, general health and physical activity can overlap in ways that make these relationships difficult to separate.
The connection with cartilage
One proposed mechanism involves matrix Gla protein, which participates in the regulation of calcification. The archived article explored how vitamins K and D may support its function in joint tissues. This is a biological explanation under investigation, rather than proof of a treatment effect.
Putting the findings in perspective
The researchers discussed meeting nutritional needs rather than taking extra vitamins without a reason. A varied diet can provide vitamin K; individual supplement decisions should be discussed with a healthcare professional.
If you take warfarin or a similar anticoagulant, keep vitamin K intake consistent and discuss dietary or supplement changes with your clinician. Sudden changes can affect the medication’s action.
Further reading
Adapted from the Bordoloi Biotech journal, with updated health context. For general information; not a substitute for individual medical advice.