Coconut Water for Hydration

Research suggests that coconut water performs comparably to commercial sports drinks and electrolyte beverages for rehydration following moderate exercise, with multiple crossover studies and one 2025 systematic review indicating it restores fluid balance similarly to carbohydrate-electrolyte drinks, though not necessarily better than plain water. Studies indicate its naturally high potassium content may compensate for its relatively low sodium levels in rehydration contexts, and one small study found it raised urinary citrate levels, a marker associated with reduced kidney stone risk, though this finding requires further investigation in larger populations. The body of evidence includes primarily small crossover trials, one randomized controlled trial, one systematic review, and several older case reports and animal studies, with overall evidence quality rated as very low to moderate, limiting the confidence of conclusions. Mixed findings are worth noting — one RCT found participants voluntarily drank less coconut water than plain water due to palatability concerns, some participants reported gastrointestinal discomfort, and a 2025 systematic review concluded coconut water offered no meaningful advantage over water for rehydration, underscoring that practical factors like taste and individual tolerance may be as relevant as any physiological effect.