Online chatter claims that vitamin D should always be taken with vitamin K2 because it directs where vitamin D goes in the body.

Applying nutrient synergy is simple: • Add lemon juice to lentils or salads to improve iron absorption. • Pair vitamin D-rich foods like eggs or milk with nuts or seeds. • Combine carotenoid-rich ...

If you count broccoli, cauliflower, and Brussels sprouts as among your most-frequently eaten foods, congratulations—you may already be consuming sufficient levels of vitamin K. Though vitamin K may be ...