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Triathlete's Near Collapse: Thirst or Salt Overload?
27 Nov, 2025
Summary
- Triathlete Lucy Charles-Barclay nearly collapsed during a race due to hyponatremia.
- Her condition was initially mistaken for heat stress, confusing medical staff.
- She recovered to win a half-Ironman title just four weeks later.
During the Ironman World Championship in Hawaii, Lucy Charles-Barclay experienced a severe physical crisis on the marathon leg. Her coach and manager alerted her husband, Reece, who intervened as she became disoriented and stopped sweating, despite consuming copious amounts of fluids. Medical professionals were initially baffled, as her symptoms didn't align with typical heat stress.
Upon returning to London, a specialist suggested hyponatremia, a condition where excessive fluid intake dangerously lowers salt levels. Charles-Barclay realized her attempts to stay hydrated might have led to an overload of isotonic drinks. This potentially life-threatening condition was averted thanks to her husband's timely intervention.
Remarkably, Charles-Barclay rebounded from this setback, securing the half-Ironman World Championship title in Marbella just four weeks later. This victory served as significant redemption after her struggles in Hawaii and other career challenges, including a previous coeliac disease diagnosis.
