Answer:

On average, one fresh coconut provides approximately 250-300 ml of water, 600 mg of potassium, about 252 mg of sodium, 57,6 mg of calcium, and 60 mg of magnesium. This potassium content meets about 12% of the daily recommended intake, while magnesium provides nearly 10-15% of the body's needs. Coconut water helps rehydrate, replenish electrolytes, quench thirst, and supports quick recovery after physical activity or heavy sweating.

With 45-70 kcal, about 9-15 g of carbohydrates, and 6-12 g of natural sugars, coconut water is healthier than carbonated soft drinks or other fruit juices. However, drinking a lot of coconut water, especially when replacing regular water, can subtly impact health negatively.

The daily potassium requirement for a healthy adult is approximately 3,500-4,700 mg. If one drinks two to three coconuts or replaces regular water with coconut water daily, the potassium intake can exceed the necessary amount.

In healthy individuals, the kidneys can regulate themselves to excrete excess potassium through urine. However, for those with impaired kidney function, limited filtration capability can lead to a sudden increase in blood potassium levels. Individuals may experience severe fatigue, muscle weakness, shaky limbs, nausea, heart rhythm disorders, and even an increased risk of kidney failure and cardiovascular complications.

Drinking too much coconut water can harm health. Photo: Le Nguyen

Additionally, consuming large amounts of coconut water daily can lead to an excess of minerals, electrolyte imbalance, or unintended weight gain. Individuals who are obese, diabetic, or have high blood pressure should control their intake to avoid affecting their treatment.

People with sensitive digestive systems, irritable bowel syndrome, the elderly, and young children also need to be cautious when drinking coconut water. The abundant magnesium content in coconut water can easily cause symptoms such as a cold stomach, slow digestion, prolonged diarrhea, and metabolic disorders.

It is advisable to limit drinking coconut water in the evening or before bed. Its cooling properties, combined with a large amount of water and minerals, can suddenly alter stomach pressure, affecting sleep quality by causing bloating, difficulty sleeping, and nocturia.

Each person should drink only one coconut a day, preferably during the day or after exercise, to facilitate the body's metabolism. It is best to drink fresh, whole coconut water immediately after opening, avoid letting it sit overnight, and limit pre-packaged coconut water that may not meet hygiene standards to prevent bacterial contamination.

If you are concerned about feeling run down in the current weather, regular check-ups with a nutritionist are recommended. Through body composition analysis using an InBody 770 machine and micronutrient testing with high-performance liquid chromatography (UPLC) technology, doctors can identify any nutrient excesses or deficiencies, thereby developing a suitable diet.

Master of Science, Doctor Nguyen Anh Duy Tung

Nutrition - Dietetics Department

Tam Anh General Clinic District 7