Which mineral is primarily responsible for helping to form bones and teeth?

Calcium is the mineral primarily responsible for helping to form bones and teeth. It plays a crucial role in maintaining bone health by contributing to the structural integrity of bones. About 99% of the body's calcium is stored in bones and teeth, making it essential for their formation and maintenance.

In addition to its structural role, calcium is also involved in various physiological functions, such as muscle contraction and nerve signaling. A sufficient intake of calcium during childhood and adolescence is vital for achieving peak bone mass and reducing the risk of osteoporosis later in life.

While potassium, sodium, and iron are important for various bodily functions, they do not have the same foundational role in bone and teeth formation as calcium does. Potassium is key in regulating fluid balance and muscle contractions, sodium is essential for fluid balance and nerve function, and iron is crucial for oxygen transport in the blood. However, none of them play a direct role in the formation and maintenance of bones and teeth.