PlainPill

Intermittent Fasting

People mainly take Intermittent Fasting for energy, focus, weight loss. Based on 171 first-hand reports. Ranked #9 of 1,974 overall.

63
User score
Mostly positive
43% positive10% mixed3% negative44% unclear

Of reports that state an outcome, 77% are positive.

Clinical research
Research pending

What Intermittent Fasting does, according to users

Of the people who reported each effect, the share who said it got better.

What the research says

Systematic reviews and meta-analyses from PubMed, with their published conclusions.

Research data for Intermittent Fasting is being compiled.

Dosage people report

As stated by users — not a recommendation. Follow the label or your doctor.

16-20 hoursdaily
2x 24h fasts + 1x 16h fast per weekas reported
18-20 hours dailyas reported
dailyas reported
16hrs 3x week, 18hrs 2x a week, 23-24hrs 2x a weekas reported
4 monthsas reported

Reported side effects

How often each side effect came up across all reports.

dizziness ×2hormonal imbalance ×1fainting ×1fatigue ×1depression ×1muscle loss ×1

What users say

Verbatim quotes, shortened only — each links to the original discussion.

“8. Intermittent fasting”
Source discussion ↗
“I fast for at least 16 hours, most days it ends up being around 20.”
Source discussion ↗
“I would suggest trying Intermittent fasting. I have much better focus and clarity.”
Source discussion ↗
“To avoid any loose skin, my working strategy has been: intermittent fasting religiously”
Source discussion ↗
“I also did intermittent fasting for the first 4 months and lost my first 50 lbs that way.”
Source discussion ↗
Top discussions (5)

Other options for energy

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