Pineal Perspective

Circadian Rhythm Explained

How the body's roughly 24-hour timing system responds to light, behavior and melatonin.

This guide is designed as a hub: start here, then follow the linked evidence and product-research paths.

What this page answers

Circadian Rhythm Explained is part of Pineal Perspective's evidence-first knowledge graph. The goal is to answer the search intent without turning a plausible mechanism, association or marketing statement into a proven medical outcome.

How to read claims in this area

Distinguish established human biology from preliminary research, associations, traditional use and seller claims. For supplement decisions, verify the current label and consider individual health circumstances with a qualified clinician.

Continue through the topic

Pineal gland guide · calcification research · supplement buyer’s guide · Pineal 10X review.

Sources & editorial standard

Belay DG, Worku MG. Prevalence of pineal gland calcification: systematic review and meta-analysis. Systematic Reviews (2023).
Authoritative health and primary research sources are preferred for biological claims; seller pages are treated as sources for seller claims only.

Educational information only; not medical advice.