What percentage of the human body is made up of calcium?

The human body contains about 1-2% calcium, primarily stored in the bones and teeth, which is critical for their structure and strength. Calcium plays a vital role in various physiological functions, including muscle contraction, nerve transmission, and hormone secretion. This percentage is relatively low compared to other minerals, but it is essential for maintaining overall health and proper biological functions.

Understanding calcium's role and its percentage in body composition helps highlight its importance in dietary recommendations and the potential consequences of calcium deficiency, such as osteoporosis and other metabolic issues. The options suggesting higher percentages misrepresent the actual composition and can lead to misunderstandings regarding the significance of calcium in human health.