How does calcium RDA change with age?

How does calcium RDA change with age?

• A. Remains 700 mg/day across ages
• B. Increases to 1000 mg/day in 4-8 years and 1300 mg/day in 9-18 years
• C. Increases to 900 mg/day in childhood
• D. Increases to 1500 mg/day in adolescence

Answer: (B)

Calcium needs rise as children grow to support bone formation and set up strong bone mass for adulthood. The recommended intake increases from 1000 mg per day for children aged 4–8 to 1300 mg per day for ages 9–18, reflecting the rapid growth and mineralization that occur during these years. The 4–8 year range requires about 1000 mg to provide enough calcium for ongoing bone development, while the 9–18 year range reaches about 1300 mg to match the accelerated growth spurts seen in puberty. This is why the option stating 1000 mg/day for 4–8 years and 1300 mg/day for 9–18 years is the best choice. Other suggested values don’t align with standard dietary guidelines: staying at 700 mg across ages underprovides during childhood growth; 900 mg is not the established RDA for these age groups; and 1500 mg/day in adolescence exceeds typical recommendations and isn’t necessary for most youths.

Calcium needs rise as children grow to support bone formation and set up strong bone mass for adulthood. The recommended intake increases from 1000 mg per day for children aged 4–8 to 1300 mg per day for ages 9–18, reflecting the rapid growth and mineralization that occur during these years. The 4–8 year range requires about 1000 mg to provide enough calcium for ongoing bone development, while the 9–18 year range reaches about 1300 mg to match the accelerated growth spurts seen in puberty.

This is why the option stating 1000 mg/day for 4–8 years and 1300 mg/day for 9–18 years is the best choice. Other suggested values don’t align with standard dietary guidelines: staying at 700 mg across ages underprovides during childhood growth; 900 mg is not the established RDA for these age groups; and 1500 mg/day in adolescence exceeds typical recommendations and isn’t necessary for most youths.