Eat · Brain health technique
Dry fasting
Evidence grade: Weak
A practice that eliminates both food and water for set periods, sometimes 12–72 hours, claiming faster “detox” or fat loss. It mimics religious fasting patterns but extends to total abstinence from fluids.
- Practice
- Eat
- Principle
- Nourishment
- Tactic
- Other Nutritional Strategies
- Evidence grade
- Weak
- Strength of evidence
- Low
The evidence behind Dry fasting
The body becomes dehydrated rapidly, increasing strain on kidneys and cardiovascular function. No credible evidence supports cognitive or metabolic benefits beyond those from safer fasting approaches. Studies on dry fasting are scarce, mostly observational or anecdotal. Risks include electrolyte imbalance, dizziness, and kidney injury, which outweigh theoretical benefits.
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