Melatonin

Koalas sleep 22 hours a day. Here's the science behind extreme animal sleep — and what it reveals about your own melatonin, REM cycles, and sleep quality.

Melatonin does both — but the effects are unequal and depend on timing, dose, and your specific sleep problem. Here's what the research actually shows.

Discover the first signs of a bad liver — from fatigue and jaundice to dark urine — and learn how your circadian rhythm plays a surprising role in liver health.

What time of day is best to take melatonin? Research shows timing matters more than dose. Learn the optimal window for sleep, shift work, jet lag, and more. 

Discover what depletes melatonin in the body — from blue light and beta-blockers to alcohol and aging — and how to protect your sleep hormone naturally.

Wondering how to check your melatonin levels? Learn which tests exist, what they measure, what results mean, and when testing is actually worth it.

Trouble sleeping, low mood, waking at 3am? These 8 signs may point to low melatonin or circadian disruption. Evidence-based guide + what to do about it.

Discover the science-backed best time of day to take melatonin for sleep, jet lag, and circadian reset. Timing protocols with real research.

Melatonin doesn't just affect the brain. Discover which organs melatonin targets — from the pineal gland to the gut, eyes, and immune system — and what that means for your sleep and health.

Your doctor dismissed melatonin — but is that the full story? Here's what the evidence actually says about physician caution, dosing gaps, and when melatonin genuinely works.

Cortisol — not a mystery — wakes you at 3am. Learn exactly why this happens, what disrupts your hormonal rhythm, and how to sleep through it.

Melatonin works for some people—but not everyone. Explore the honest science behind when melatonin is the right tool, and when CBT-I, magnesium, or sleep hygiene will serve you better.