Nutrition
Runner's Gut Syndrome
Runner's gut syndrome is recurring bloating, nausea, or urgency linked to run volume and intensity—often worse in heat and at race pace than on rest days.
Runner's gut syndrome describes recurring upper and lower GI symptoms—bloating, nausea, urgency—tied specifically to running volume and intensity. It overlaps with irritable bowel patterns but is often worse at race pace and in heat.
Triggers include FODMAPs, caffeine stacking, and untrained carb loads.
Common questions
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Is runner's gut the same as IBS?
Symptoms overlap, but runner's gut often flares with workouts and heat while IBS may persist daily. A clinician can clarify diagnosis and safe fueling trials.
Related terms
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