📌 Free 40-Part Circadian Protocol → https://enter.thelongevityvault.com/40sleep?utm_source=youtube&utm_medium=description&utm_content=melatonin_video

If you've been taking melatonin for months — or longer — and sleep is still unreliable, the issue is unlikely to be the brand or the dose. Melatonin addresses a specific mechanism, and when the underlying cause of poor sleep sits elsewhere, it tends to run in the background without doing much — while making that underlying cause harder to identify over time. This video lays out what that mechanism is, where it applies, and where it doesn't.

In this video, you'll learn:

Why most adults with sleep complaints have intact melatonin production — and what that means for whether a supplement is likely to help

• How aging affects melatonin production, and why the "older means less melatonin" picture is more nuanced than that

• What DLMO is and why taking melatonin at the wrong point in your internal light-dark cycle can undermine rather than support sleep onset

• The situations in my work where melatonin has been the right recommendation, and what distinguished those cases

─────────────────────────About Kat Fu, M.S., M.S.

Dual master's degrees in Engineering and Biomechanics. Since 2007, I've applied an engineer's approach to health optimization — now focused on sleep. I help high-agency adults get dependable sleep, better energy, and long-term brain protection through The Longevity Vault.Substack: https://thelongevityvault.substack.com/LinkedIn: https://www.linkedin.com/in/thekatfu/The Longevity Vault: https://thelongevityvault.com/Disclaimer: This content is for informational and educational purposes only and does not constitute medical advice. Always consult a qualified healthcare provider.