According to the new DRIs, the acceptable macronutrient distribution ranges (AMDRs) for dietary fat are ________ percent for children 1-3 years and _________ percent for children 4-18 years.

Question

BlackTom AI · Accepted Answer

AMDRs for fat are set higher for toddlers because rapid brain growth and energy needs require a greater percentage of calories from fat; specifically, the DRI committee established 30–40% of energy from fat for children 1–3 years and 25–35% for children 4–18 years.

1. Relevant knowledge points and concepts
- AMDR (Acceptable Macronutrient Distribution Range) defines the recommended percent of total energy from each macronutrient to reduce risk of chronic disease while providing adequate nutrients.
- For fat, children aged 1–3 require a higher percentage to support growth and neurologic development; older children can safely have a slightly lower percent.
- The Dietary Reference Intakes (DRIs) list these age-specific AMDRs.

2. Step-by-step reasoning process
- Examine each answer option and compare to the DRI-established ranges:
  - Option A: 30–40% for ages 1–3; 25–35% for ages 4–18.
  - Option B: 40–50%; 30–40% — this places 1–3 years at 40–50%, which exceeds the DRI upper limit for toddlers.
  - Option C: 35–50%; 20–40% — first range too high and second too broad/incorrect.
  - Option D: 35–45%; 25–40% — first range again above the correct upper limit.
- The correct DRI values are 30–40% (1–3 years) and 25–35% (4–18 years), which exactly matches Option A.

3. Calculations/intermediate steps
- No arithmetic calculation is needed beyond comparing percentage ranges; confirmation is by direct match to the DRI values.

4. Why the correct answer is correct
- Option A exactly reproduces the DRI AMDR for fat: toddlers 1–3 years should obtain 30–40% of energy from fat; children and adolescents 4–18 years should obtain 25–35%.

5. Why other options are incorrect
- Option B raises the 1–3 year upper limit to 50%, exceeding DRI guidance.
- Option C has both an incorrect elevated lower/upper bound for 1–3 years and an incorrect broad second range.
- Option D sets 1–3 years at 35–45%, again above the established DRI upper limit (40%).

6. Conclusion
The correct AMDRs are 30–40% for children 1–3 years and 25–35% for children 4–18 years, matching the provided answer (30-40; 25-35).

According to the new DRIs, the acceptable macronutrient distribution ranges (AMDRs) for dietary fat are percent for children 1-3 years and _ percent for children 4-18 years.单项选择题

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According to the new DRIs, the acceptable macronutrient distribution ranges (AMDRs) for dietary fat are ________ percent for children 1-3 years and _________ percent for children 4-18 years.单项选择题