Please don’t get me wrong, I absolutely love coconuts, and coconut water. Living in the tropics, it is one of my favourite parts of my diet, and I consider myself lucky to have such ready access to this liquid gold.
As an athlete, I used to think that drinking coconut water was beneficial for my recovery; for helping my muscles recover after a heavy workout, or my electrolytes and hydration rebalance after a particularly long, sweaty run.
But is there really any proven benefit to drinking coconut water over regular water?
Coconut water has been found to be a viable option for home-based rehydration in the earlystages of gastro intestinal distress, even though it does not have a complete electrolyte profile. That said, it can be an OPTION as part of a more complete treatment plan. In no way am I saying that coconut water can 100% rehydrate you after you’ve had gastro/food poisoning/other, and I recommend that if you are experiencing these things, to always seek advice from your healthcare provider. For people experiencing mild distress and diarrhea, it can be a step to assisting recovery, however any significant health concerns should always be directed to a doctor.
When it comes to other health conditions, the wide-spread recommendations are even more particular; As coconut water is so high in potassium, it is recommended that people with renal disease don’t consume it, especially in excess, as it can cause life-threatening hyperkalaemia. For people with diabetes, even one liter of coconut water may be significantly damaging to their system.
What about sports people?
While it may be an option for rehydration in early stages of gastro intestinal upset, when addressing rehydration in relation to strenuous exercise, across numerous studies (linked below), no significant evidence was found to favor coconut water over regular water, or sport-directed electrolyte beverages.
Brushing aside rehydration efforts to examine athletic performance exclusively, comparing coconut water with regular water also found that the coconut option offered no significant benefits to athletes trying to improve their performance levels. In fact, a number of athletes found that their stomachs and digestive systems were more likely to be upsetby the coconut water than by regular water, indicating that drinking it while exercising may actually be a hindrance, rather than a benefit. Some participants in the studies found that drinking coconut water delayed total exhaustion, but not in a statistically significant way when compared to drinking regular water.
What does this mean for you?
This means that if you are looking for a cheap and easy rehydration solution, sticking with normal drinking water is your best (and most affordable) bet. Coconut water is a wonderful drink, and definitely one of my favorites. I often drink both fresh and packaged water, however prefer to keep it as a rare treat, rather than a daily requirement. The flavor and perceived sweetness may make it easier to drink fluids after exercise, and this may be the reason you drink it, but don’t be fooled into thinking that you need it in order to reach your athletic peak. Sometimes the best things in life really are free.
Sources:
- Kalman DS, Feldman S, Krieger DR, Bloomer RJ. Comparison of coconut water and a carbohydrate-electrolyte sport drink on measures of hydration and physical performance in exercise-trained men. J Int Soc Sports Nutr. 2012;9(1):1.
- Peart DJ, Hensby A, Shaw MP. Coconut water does not improve markers of hydration during sub-maximal exercise and performance in a subsequent time trial compared with water alone. Int J Sport Nutr Exerc Metab. 2017;27(3):279-284.
- Altom EK, Davenport GM, Myers LJ, Cummins KA. Effect of dietary fat source and exercise on odorant-detecting ability of canine athletes. Res Vet Sci. 2003;75(2):149-155.
- Chavalittamrong B, Pidatcha P, Thavisri U. Electrolytes, sugar, calories, osmolarity and pH of beverages and coconut water. Southeast Asian J Trop Med Public Health. 1982;13(3):427-431.
- Saat M, Singh R, Sirisinghe RG, Nawawi M. Rehydration after exercise with fresh young coconut water, carbohydrate-electrolyte beverage and plain water. J Physiol Anthropol Appl Human Sci. 2002;21(2):93-104.
- Adams W, Bratt DE. Young coconut water for home rehydration in children with mild gastroenteritis. Trop Geogr Med. 1992;44(1-2):149-153.
- Pérez-Idárraga A, Aragón-Vargas LF. Postexercise rehydration: potassium-rich drinks versus water and a sports drink. Appl Physiol Nutr Metab. 2014;39(10):1167-1174.
- Ismail I, Singh R, Sirisinghe RG. Rehydration with sodium-enriched coconut water after exercise-induced dehydration. Southeast Asian J Trop Med Public Health. 2007;38(4):769-785.
- Rees R, Barnett J, Marks D, George M. Coconut water-induced hyperkalaemia. Br J Hosp Med (Lond). 2012;73(9):534.
- Rusyniak DE, Durant PJ, Mowry JB, Johnson JA, Sanftleben JA, Smith JM. Life-threatening hyperkalemia from cream of tartar ingestion. J Med Toxicol. 2013;9(1):79-81.
- Devgun MS. Coconut water drink and the risk of hyperkalaemia in diabetes. Pract Diab. 2016;33(3):87-89.
- Cohen D. The truth about sports drinks. BMJ. 2012;345:e4737.
- Laitano O, Trangmar SJ, Marins DM, Menezes ES, Reis GS. Improved exercise capacity in the heat followed by coconut water consumption. Motriz. 2014;20(1):107-111.
- The Penny Magazine of the Society for the Diffusion of Useful Knowledge. Ver 3. London: Charles Knight; 1834.