Calcium is the key mineral essential for bone health, making up the primary structural component of bones and teeth. About 99% of the body’s calcium is stored in the skeleton, where it provides strength and density. Throughout your life, your bones are constantly being broken down and rebuilt — a process called bone remodeling — and calcium is vital for this cycle. In addition to its role in maintaining bone structure, calcium also plays a part in muscle function, nerve signaling, and blood clotting. If your body doesn’t get enough calcium from your diet, it pulls it from your bones, which over time can lead to decreased bone mass and conditions like osteoporosis. Dairy products, leafy greens, fortified plant milks, and tofu are excellent sources. Ensuring sufficient calcium intake, especially during childhood, adolescence, and older adulthood, is essential for building and maintaining strong, healthy bones.