Evidence-based
Prolonged Fasting
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•Last Updated: August 28, 2025
Prolonged fasting is abstaining from food for a long period of time. The time period may range between 2 – 21 days.
Prolonged fasting is abstaining from food for a long period of time. The time period may range between 2 – 21 days.
Prolonged Fasting is most often used for Fat Loss. The Examine Database covers Cognitive Improvement.
In this meta-analysis of 63 randomized controlled trials in 3,484 participants (average age of 12 to 40) without apparent health conditions, fasting did not affect performance on cognitive tests, compared to eating beforehand.