Extended Fasting
People mainly take Extended Fasting for focus, memory, longevity. Based on 2 first-hand reports. Ranked #622 of 1,974 overall.
23
User score
Mostly positive100% positive0% mixed0% negative0% unclear
Of reports that state an outcome, 100% are positive.
Clinical research
Research pending
What Extended Fasting does, according to users
Of the people who reported each effect, the share who said it got better.
betterno changeworse
What the research says
Systematic reviews and meta-analyses from PubMed, with their published conclusions.
Research data for Extended Fasting is being compiled.
Dosage people report
As stated by users — not a recommendation. Follow the label or your doctor.
multi-day fastsas reported
2-5 daysas reported
Reported side effects
How often each side effect came up across all reports.
No side effects reported so far.
What users say
Verbatim quotes, shortened only — each links to the original discussion.
“When completing a multi day fast though, I swear to god I end up looking and feeling like 5 years younger.”
“Extended fasting 2-5 days. All brain fog will disappear after 24-36 hours...my memory is so sharp”
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User data from public discussions; research from PubMed. Information only, not medical advice — talk to a doctor before starting, stopping or combining anything. Data updated October 2, 2026. How we rate