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Story perspectives

Study: Low Energy Doubles Medical Risk for Runners

10/17/2025

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Story summary
  • Kristin Whitney, a researcher, conducted a study of more than 1,000 Boston Marathon participants, finding that low energy availability doubled the risk of needing medical support.
  • Low energy availability arises when calorie intake does not meet energy expenditure, often due to weight loss misconceptions.
  • Experts recommend three meals and two snacks daily, plus prioritizing post-run nutrition to aid recovery.