What it is
Regulatory status: dietary timing pattern, not a drug or device
Evidence basis: Human clinical evidence
Time restriction shortens the daily eating window and may reduce energy intake or align intake with circadian biology. Effects depend on window timing, calorie intake, adherence, sleep, and baseline metabolic health.
What it is, why people use it, the evidence, and what to know before trying it.
Regulatory status: dietary timing pattern, not a drug or device
Evidence basis: Human clinical evidence
Situations where this practice may need modification or professional guidance.
Fasting can cause hunger, headache, dizziness, irritability, or low blood glucose. It may be unsuitable during pregnancy, for eating-disorder risk, in children, or with glucose-lowering medicines unless clinically supervised.
This review does not automatically apply to:
Public protocols that include 16:8 intermittent fasting. Open one to see the full context and source.
daily eating window in the September 2025 snapshot · generally 2–10 p.m.; often compressed to roughly 2–3 p.m. through 9 p.m.
Two larger meals plus one or two whey shakes within the window. He stated no weight-loss goal.
Session and schedule patterns reported in public protocols; these are observations, not instructions. Private and hidden usage is excluded.