Is coconut water good for electrolytes while fasting?

It has electrolytes but also sugar; a sugar-free electrolyte mix is the fasting-safe alternative.

Does coconut water break ketosis?

Yes, its carbohydrate can interrupt ketosis.

Does Coconut Water Break a Fast?

Reviewed by the FastTrack team · Updated June 2026

Short answer: Yes

Coconut water breaks a fast. It contains natural sugars and calories that raise blood sugar and insulin, so it ends a fast despite being marketed as healthy.

Calories	~45-60 kcal per cup
Breaks a weight-loss fast?	Yes
Breaks ketosis?	Yes
Breaks autophagy?	Yes
Insulin impact	Yes

Why coconut water breaks a fast

Coconut water is not just water. A cup has around 45 to 60 calories and 9 to 12 grams of natural sugar, enough to raise blood glucose and insulin and break a fast. Its reputation as a health drink does not change the fact that it contains real carbohydrate.

Electrolytes without the sugar

People often reach for coconut water during a fast for its potassium and electrolytes. The cleaner way to get those is a sugar-free electrolyte mix or a pinch of salt with magnesium and potassium, which deliver the minerals without the sugar that breaks the fast.

How much is safe

Save coconut water for your eating window; for electrolytes during a fast use a sugar-free mix instead.

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Frequently asked questions

Does coconut water break a fast?: Yes, its natural sugars and calories break a fast.
Is coconut water good for electrolytes while fasting?: It has electrolytes but also sugar; a sugar-free electrolyte mix is the fasting-safe alternative.
Does coconut water break ketosis?: Yes, its carbohydrate can interrupt ketosis.
How much sugar is in coconut water?: Around 9 to 12 grams per cup.