Editorial Standards

Fasting is a health topic, and health content deserves to be held to a standard. This page explains how we research and review what we publish — and, just as importantly, what we are not qualified to tell you.

How we source health claims

• Primary sources first. Physiological claims — what happens to insulin, glucose, or autophagy during a fast — are cited to peer-reviewed research (PubMed, NIH) or major medical institutions (Cleveland Clinic, Johns Hopkins, Mayo Clinic, Harvard Health).
• Sources are visible. Articles making clinical claims carry a Sources list you can click through and check yourself. We link out to the study, not to a summary of a summary.
• We flag uncertainty. A lot of fasting research is small, short, or done in animals. Where evidence is thin or contested, we say so rather than rounding it up to a confident claim.
• No health claims for the app. FastFocus is a fasting timer and tracker. It does not diagnose, treat, or prevent anything, and we don't imply that it does.

Review and updates

Every article shows the date it was last reviewed. When guidance changes or we find an error, we update the article and move that date — we don't quietly edit and backdate. If you spot something wrong, tell us and we'll fix it.

Who fasting isn't for

We repeat this in our articles because it matters: fasting is not appropriate for everyone. That includes people who are pregnant or breastfeeding, anyone with a history of disordered eating, people with type 1 diabetes or on glucose-lowering medication, and anyone taking medication that has to be taken with food. Talk to a doctor first.

Who writes for FastFocus

Questions about our sourcing? Reach us through the contact details in our privacy policy.