Requirements for macronutrients and micronutrients are higher on a per-kilogram basis during which developmental stage?

General
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requirements for macronutrients and micronutrients are higher on a per-kilogram basis during which developmental stage?

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LectureNotes said requirements for macronutrients and micronutrients are higher on a per-kilogram basis during which developmental stage?

Answer: The developmental stage during which the requirements for macronutrients and micronutrients are highest on a per-kilogram basis is infancy.

Reasons:

  1. Rapid Growth and Development:

    • Infants experience rapid growth and development in the first year of life. Their weight, length, and brain development all increase dramatically during this period.

  2. High Energy Needs:

    • Infants have higher basal metabolic rates relative to their body weight compared to older children and adults, necessitating a greater intake of macronutrients such as carbohydrates, proteins, and fats to meet energy demands.

  3. Nutrient Density Requirements:

    • Due to the small size of an infant’s stomach, they require nutrient-dense foods to ensure they receive adequate vitamins and minerals necessary for growth. Breast milk and/or formula are initially the primary sources of these nutrients.

  4. Development of Body Systems:

    • Critical development of various body systems occurs during infancy, requiring sufficient micronutrients, such as vitamins A, D, E, and K, as well as minerals like calcium, iron, and zinc.

Consider the following specifics:

  • Proteins: Essential for growth and repair of tissues and organs.
  • Fats: Crucial for brain development and the absorption of fat-soluble vitamins.
  • Carbohydrates: Provide necessary energy for physical activities and bodily functions.
  • Iron: Important for hemoglobin formation and cognitive development.
  • Calcium and Vitamin D: Vital for bone growth and strength.
  • Vitamin C: Supports the immune system and aids in the absorption of iron.

This critical phase of life sets the stage for future health and development, making adequate nutrition paramount. Both the quality and quantity of nutrients are key factors that influence an infant’s growth trajectory and overall health outcomes.