The Claim
Compliance with intermittent fasting regimens is higher than 80% in clinical trials lasting less than three months and significantly lower in trials lasting three months or longer, indicating a decline in adherence over extended durations.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
In clinical studies, people stick to intermittent fasting better for the first three months than they do after that, and adherence drops noticeably over longer periods.
See the scientific wording
Compliance with intermittent fasting regimens remains high (>80%) in trials lasting less than three months but declines substantially in longer-term studies, suggesting short-term adherence does not predict long-term sustainability.
The body's internal clock and brain reward system adjust to the fasting schedule, making it harder to stick to over time because eating at usual times feels more natural and satisfying, while fasting becomes mentally taxing and less rewarding.
What the research says
1 studyThe study says most people stick to intermittent fasting for the first few months, but it doesn’t have data on what happens after three months — and it even says we need more long-term studies, which suggests people probably drop off later.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.