Coconut water is considered by some people to be just a refreshing drink, perfect on a hot day. Coconut oil is wildly popular these days and has so many uses for health and beauty. However, coconut water is also starting to receive more and more appreciation, especially as a natural alternative for sports drinks.
The clear liquid found inside green coconuts is now marketed as a sports drink and you can easily find it in gyms and grocery stores. Can coconut water really help athletes re-hydrate and replenish the electrolytes lost during a workout just like a sports drink can?
Calories – Coconut water is low in calories, as 1 cup only gives you 45 calories, a desirable trait if you’re looking to use it as a sports drink or just to replace the plain, boring water every now and then.
Water – Out of 240 grams, 228 are water (about 95%) so in terms of hydration, you need not worry if you chose coconut water over a sports drink or plain H2O.
Sugars – There are only 6.3 grams of sugar in a cup of coconut water, which makes it a good alternative to drinking fruit juices and sodas. The story is different if you choose flavored coconut water, which usually contains added sugars.
Potassium – One serving of coconut water has about 600 mg of potassium, which is 17% of the daily recommended values. Anyone who works out knows how uncomfortable muscle cramps are, and potassium can help you get rid of them. Also, the typical Western diet doesn’t include enough potassium to reach the daily requirements.
Sodium – Coconut water contains low amounts of sodium, only 250 mg per serving. Considering most people have sodium-rich diets, the fact that coconut water doesn’t contain too much seems beneficial. In terms of replenishing sodium lost through sweat after an intense workout, coconut water doesn’t provide enough of it.
Other electrolytes – Besides sodium and potassium, coconut water contains other electrolytes such as magnesium (60 mg/serving) and calcium (57mg/serving). However, sodium and potassium remain the top electrolytes that are lost through sweat.
Vitamins – While coconut water has only low amounts of B vitamins, one cup gives you 5.8 mg of vitamin C which is 10% of the daily recommended value.
Minerals – On top of the electrolytes that are essential for post-workout recovery, coconut water can give you 17% of the daily value of manganese and low amounts of iron, phosphorous, copper, selenium and zinc.
The growing hype around coconut water turned into the perfect subject for research. A team of scientists led by Dr. Chhandashri Bhattacharya from Indiana University Southeast, analyzed coconut water and two popular sports drinks, Gatorade and Powerade. They found all three drinks had similar amounts of carbohydrates and magnesium. However, 1 liter of coconut water had up to 1500 mg of potassium and 400 mg of sodium, while 1 liter Gatorade or Powerade had about 300 mg of potassium and 600 mg of sodium. Plus coconut water is richer in other nutrients, compared to sports drinks. So the main difference is coconut water has a lot more potassium but les sodium than the analyzed sports drinks.
This means, coconut water may not be a good sports drink alternative for those who engage in strenuous exercise that causes a lot of sweating, as more sodium is lost through sweat than potassium and coconut water doesn’t have enough to replenish the lost amount.
Another study, conducted by Malaysian researchers analyzed post-workout rehydration using plain water, coconut water and a sports drink. They monitored 8 healthy men during three runs performed in the heat. There was one week of rest period between the runs. They measured hydration levels before the runs and after the runs, during the two-hour rehydration periods, during which the subjects receives either plain water, coconut water or a sports drink representing 120% of the fluid loss. They found all three drinks were equally effective for rehydration, although it seems coconut water was easier to ingest in larger amounts and caused less nausea and upset stomachs than the other two drinks.
It seems coconut water is a viable sports drink alternative to rehydrate after a low to moderate intensity workout. There’s a common sense question you might be asking yourself: If coconut water’s only shortage in terms of becoming an adequate sports drink is its low sodium content, then why not add some more?
The truth is, you can….and a 2007 study already analyzed the efficiency of post-exercise rehydration using sodium-enriched coconut water. They compared it with plain water, fresh young coconut water, sports drink and sodium-enriched fresh young coconut water. It seems the sodium-enriched coconut water was just as good as the sports drink for whole body rehydration, but it was easier to tolerate causing less nausea and upset stomach compared to plain water and the sports drink.
There’s ongoing research on the potential health benefits of coconut water, but we have very little findings so far without enough scientific support. Small studies have shown coconut water can lower systolic blood pressure in hypertensive patients and there might be a link between coconut water intake and a lower rate of heart attacks. We can however, consider coconut water to be healthy judging its vitamin and mineral content.
Because it hasn’t been studied well enough, we don’t know if drinking coconut water regularly has any side effects, although it seems quite safe.
Sodium-enriched or not, there is still a significant difference between coconut water and sports drinks. Coconut water in its natural, unaltered state contains less sugar than the typical sports drink and doesn’t have any artificial flavors and colorants. In terms of a healthy diet, opting for coconut water to replace commercial sports drinks and even fruit juices and sodas is definitely the better choice.
*Data taken from nutritiondata.self.com