Children should not be placed on very low-fat diets because

Question

BlackTom AI · Accepted Answer

Young children require dietary fat because it supplies concentrated energy and essential fatty acids needed for growth and brain development.

1. Relevant knowledge points and concepts
- Fat provides 9 kcal/g (more than protein or carbohydrate at 4 kcal/g), making it important for meeting high caloric needs of infants and toddlers.  
- Essential fatty acids (linoleic and alpha-linolenic acids) are required for neuronal myelination, vision, and cell membranes.  
- Dietary fat is necessary for optimal absorption of fat‑soluble vitamins A, D, E and K.  
- Recommended fat intake is higher in early childhood (infants ~40–50% of calories, toddlers ~30–40%) than in older children/adults.

2. Step-by-step reasoning
- Young children have higher energy needs per kg body weight and limited stomach capacity, so foods must be energy-dense. Fat’s high caloric density helps meet those needs without excessive volume.  
- Removing or severely restricting fat reduces energy density and intake, risking failure to thrive, slowed growth, or inadequate essential fatty acid intake.  
- Lack of fat also impairs absorption of fat‑soluble vitamins critical for development.

3. Calculations (intermediate steps)
- Example: if a toddler needs ~1000 kcal/day, a diet with 35% of calories from fat provides 350 kcal from fat (≈39 g fat). A very low‑fat plan at 15% provides 150 kcal (≈17 g fat). That is a 200 kcal shortfall (≈22 g fat), a significant deficit for a small child.

4. Why the correct answer is correct
- Option (a) directly addresses both the caloric density and essential fatty acid/vitamin absorption reasons why children should not be on very low‑fat diets. These physiological needs make moderate dietary fat essential.

5. Why the other options are incorrect
- (b) “They do not digest fat well” is false: children digest fat efficiently (breast milk/formula fat is well digested; infants have lipases and bile).  
- (c) “Low‑fat foods cause picky eating” is not a primary physiologic reason; picky eating is behavioral and not caused by the fat content per se.  
- (d) “Low‑fat diets reduce iron absorption” is incorrect — iron absorption is affected by enhancers/inhibitors (vitamin C, phytates, heme vs nonheme), not dietary fat level.

Conclusion: The correct answer is a. They need healthy fats for adequate caloric intake, which matches the provided answer.

Children should not be placed on very low-fat diets becauseSingle choice

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