6 doctors weighed in:
Is it healthy to fast with just water? And how often should it be done?
6 doctors weighed in

Dr. Matt Malkin
Anesthesiology
3 doctors agree
In brief: Not especially
If you are fasting for a day for religious or spiritual reasons, then you should be ok as long as you don't have diseases like diabetes or hypoglycemia.
If you're trying to lose weight, this won't help as your body will slow metabolism. For bowel health is unnecessary as bowel constantly clearing things our, even during sleep. See your doc for specifics.

In brief: Not especially
If you are fasting for a day for religious or spiritual reasons, then you should be ok as long as you don't have diseases like diabetes or hypoglycemia.
If you're trying to lose weight, this won't help as your body will slow metabolism. For bowel health is unnecessary as bowel constantly clearing things our, even during sleep. See your doc for specifics.
Dr. Matt Malkin
Dr. Matt Malkin
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Dr. Terry Woodard
Internal Medicine - Nephrology & Dialysis
3 doctors agree
In brief: Not recommended
Water is "necessary but not sufficient" as taught in training! maintenance fluid intake should contain minerals, vitamines, and some basic fuel for energy that is essential for many cells to function best (especially simple carbohydrates and protein, even on a short term basis).
Water alone provides only a portion of the needed elements for healthy cellular and body functions.

In brief: Not recommended
Water is "necessary but not sufficient" as taught in training! maintenance fluid intake should contain minerals, vitamines, and some basic fuel for energy that is essential for many cells to function best (especially simple carbohydrates and protein, even on a short term basis).
Water alone provides only a portion of the needed elements for healthy cellular and body functions.
Dr. Terry Woodard
Dr. Terry Woodard
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Dr. Soroosh Armandi
Anti-Aging Medicine
1 doctor agrees
In brief: No
Not healthy. Why with water alone? You're not getting any nutrients or minerals or calories.

In brief: No
Not healthy. Why with water alone? You're not getting any nutrients or minerals or calories.
Dr. Soroosh Armandi
Dr. Soroosh Armandi
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2 comments
Dr. Soroosh Armandi
In alternative medicine literature yes. In westernized medicine literature, no. Most likely because there's not enough money behind doing an extensive research on fasting. But my opinion is that if you're going to do a fast, don't starve yourself of nutrients, minerals and calories. Keep it simple and healthy. Nothing extreme.
Dr. Soroosh Armandi
That should be fine.
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