What is the RDA of calcium for adolescents ages 9-18?

The recommended dietary allowance (RDA) for calcium for adolescents ages 9-18 is indeed 1300 mg/day. This increased requirement during adolescence is due to the rapid growth and development that occurs during this critical period. Adolescents experience significant bone growth and density increases, making adequate calcium intake vital for developing a strong skeletal structure and reducing the risk of osteoporosis later in life.

While calcium is essential for various bodily functions, including muscle contractions and nerve signaling, the priority during growth phases like adolescence is to ensure that there is enough calcium to support the formation of bone mass. Meeting the RDA of 1300 mg/day helps ensure that adolescents can reach their peak bone mass, a crucial factor in long-term bone health.

The higher RDA set for this age group reflects the need for sufficient calcium intake to support these essential processes during a time of significant physical development.