When Do Calorie Needs Increase? Exercise, Growth, Pregnancy, Illness & Stress

Energy requirements rise in these states:

  • Physical activity – intensity/duration dependent.
  • Growth – children, adolescents.
  • Pregnancy & lactation – +300–500 kcal/day (pregnancy), +450–500 kcal/day (lactation).
  • Recovery from illness/injury – hypermetabolic state.
  • Chronic stress – cortisol-driven catabolism; may also increase intake via emotional eating.

Individualized nutrition plans should match expenditure and support health goals.

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