Vitamin K Cuts Arthritis Risk

In a recent study of 672 adults, those who had the highest vitamin K levels were less likely to have osteoarthritis of the hands and knees than people who had the lowest levels.

Theory: Insufficient vitamin K could affect proteins that build and maintain bone and cartilage.

Self-defense: Get the recommended daily intake of vitamin K—65 micrograms (mcg) for women and 80 mcg for men.

Good sources: Spinach, broccoli and olive oil.

Caution: If you take a blood thinner, vitamin K can reduce the drug's effectiveness.