What is Water Fasting?
Water fasting is a temporary period of abstinence from all food and drink except water. It typically lasts from 24 to 72 hours, and longer fasts should only be undertaken under strict medical supervision due to potential health risks. During a water fast, individuals consume only water, usually two to three liters per day.
Water fasting, as described across multiple sources (Healthline, Medical News Today, Verywell Health, Health, Verywell Fit), involves completely refraining from consuming any food or beverages other than plain water. This practice differs from other fasting methods which may allow certain beverages like tea or coffee.
Duration and Safety
Most sources recommend limiting water fasts to 24-72 hours (Healthline, Medical News Today, Verywell Health). Extending the fast beyond this period necessitates close medical monitoring (Healthline) because of potential health complications. A study referenced in PubMed explored the effects of a 48-hour water fast on chemotherapy patients.
Potential Benefits and Risks
Some research suggests potential benefits, such as weight loss and a potential reduction in risk factors for certain chronic diseases (Healthline, Health). However, it is crucial to note that while short-term weight loss may occur, this can often be regained quickly after the fast ends (UIC Today). Furthermore, longer fasts can pose significant health risks requiring medical supervision (Healthline). A study mentioned in NCBI specifically investigated the potential health threats associated with 8-day water fasts.
