Key Takeaways

Calcium and vitamin D work best together because vitamin D helps the body absorb calcium for stronger bones.

Many adults can meet calcium needs through food, but vitamin D often requires supplements because there are limited food sources with high levels of the vitamin.

Calcium and vitamin D are both essential nutrients for maintaining strong, healthy bones. And while each plays a different role in bone health, experts say they work better when taken together.

What Calcium and Vitamin D Do in the Body

Calcium is a mineral that gives bones their structure and strength , while vitamin D is a hormone that supports bone growth .

"Calcium is the main building block that gives bones their structure and strength," said Diana Guevara, MPH, RD , a community health educatio

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