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Energy Needs Vary: Muscle Mass and Hormones Matter

2/24/2026

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Story summary
  • Bethan Crouse of Loughborough University notes energy needs vary, with guidelines of 2,000 calories for women and 2,500 for men.
  • Crouse notes that body composition and hormones influence these needs.
  • Men typically require more calories due to higher muscle mass.
  • For instance, a muscular woman may need more calories than an average man.
  • Long-term dieting can lower energy requirements; for guidance, Crouse recommends NHS and WebMD.