Fasting with water implies abstaining from any high-calorie foodsand exclusive consumption of water. Some modern protocols include electrolytes without calories(especially sodium) for comfort and safety. It is different from intermittent fasting(e.g. 16/8), which daily alternate fasting and meal windows; water fasting is less often and more intensively, with potential short-term benefits (caloric restriction, ketosis), but also higher risksif done without preparation.
Usual durations: 24—48 hfor beginners; up to 72 honly if it is well tolerated. Longer periods should be done only with medical supervision. A critical part is refeed: gradual return to nutrition (clear soups → lightly cooked vegetables → light starches → lean proteins), to avoid digestive discomfort and electrolyte imbalances.
Not recommendedin pregnancy/lactation, underweight, eating disorders, insulin-treated diabetes, renal/heart/liver disease, active ulcer or in minors. Consult a doctor before trying.
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