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Research, Reviewed
Research area

Circadian Research

This area looks at sleep and the body clock.

Data sheet · Updated August 2026 · How we source this

What this area studies

Researchers here look at sleep and the body clock.

Almost everything in the body runs on a daily cycle. Researchers want to know what sets it.

Compounds we hold a record for

Appearing here means the name turns up in this field of study. It does not mean the compound does anything.

How strong is the evidence?

Read this before anything else

This is one of the thinner areas on the site. Nearly all of it is animal work. The human trials that do exist disagree with each other, and one double-blind study of DSIP in poor sleepers found no real benefit at all.

Sources

  1. Delta sleep-inducing peptide: a review PubMed
  2. DSIP for chronic insomnia — a double-blind trial that found no real benefit PubMed
  3. DSIP: a still unresolved riddle PubMed

We link what we read. Where a source found nothing, we link that too — a page that only cites the positive results is not a source list, it is an advert.

This is not a shopping list and it is not advice. None of these is approved for people to take. Talk to a doctor about your health.