How this page evolved

Every published version is kept. Each entry shows what changed and why. Earlier versions can be restored by moderators, but only if the material they rely on is still available.

1. Revision 5Sep 30, 2026, 7:41 PMLive

   Removed a survey poll that wasn't a close enough match to this topic.

   • · Updated “How much sleep adults need”.
2. Revision 4Sep 30, 2026, 7:36 PM

   Added a reader poll shown alongside published survey figures.

   • · Updated “How much sleep adults need”.
3. Revision 3Sep 30, 2026, 6:25 PM

   Connected the supplement and screens subtopics and added a comparison of common approaches.

   • · Added section “Over-the-counter aids and supplements”.
   • · 1 new source cited.
   • · Key takeaways were added.
   • · 4 new pieces of guidance for specific situations.
   • · 1 new open question.
4. Revision 2Sep 30, 2026, 6:25 PM

   First brief from the sleep duration consensus and the insomnia treatment guidelines.

   • · The main finding was rewritten.
   • · The finding is now labelled “evidence” (was “interpretation”).
   • · Added section “How much sleep adults need”.
   • · Added section “CBT-I: the first-line treatment”.
   • · 5 new sources cited.
   • · The note on uncertainty changed.
   • · 2 new open questions.
5. Revision 1Sep 30, 2026, 6:25 PM

   Created the Sylo.

   • · First published version.