RDA of zinc in a child ?
**Core Concept**
The Recommended Dietary Allowance (RDA) of zinc is a crucial aspect of pediatric nutrition, as zinc is an essential mineral involved in various physiological processes, including growth and development, immune function, and wound healing. The RDA of zinc varies based on age, sex, and other factors.
**Why the Correct Answer is Right**
The RDA of zinc for children is set by the National Academy of Medicine (NAM) to ensure adequate intake for optimal growth and development. For children between 1 and 3 years old, the RDA of zinc is 3 milligrams (mg) per day, which is essential for supporting immune function, wound healing, and protein synthesis. This RDA is based on the zinc requirements for growth and development, as well as the prevention of zinc deficiency.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect, as the RDA of zinc for children is not 2 mg per day. This value is too low to support optimal growth and development.
**Option B:** This option is incorrect, as the RDA of zinc for children is not 5 mg per day. This value is higher than the recommended amount and may lead to zinc toxicity.
**Option C:** This option is incorrect, as the RDA of zinc for children is not 10 mg per day. This value is excessively high and may cause adverse effects.
**Clinical Pearl / High-Yield Fact**
It is essential to note that zinc deficiency can lead to growth retardation, impaired immune function, and increased susceptibility to infections in children. Therefore, it is crucial to ensure adequate zinc intake through a balanced diet or supplements, if necessary.
**Correct Answer: D. 3 mg**