DLMO

Articles tagged with "DLMO".

DLMO: The Gold Standard Test for Measuring Your Circadian Clock Timing

Tags: DLMO, Circadian Timing, Melatonin Onset, Biological Clock

October 22, 2025

What Is the Most Accurate Way to Measure Your Individual Circadian Timing?

Dim Light Melatonin Onset (DLMO) is the gold standard test for measuring individual circadian timing, providing the most reliable indicator of when your biological clock naturally wants to initiate sleep. DLMO measures the precise time when melatonin levels begin to rise in dim light conditions (typically less than 10 lux), revealing your personal circadian phase independent of external factors like bright lights or sleep schedules. This measurement is crucial for diagnosing circadian rhythm disorders and optimizing personalized sleep timing recommendations.

How Melatonin Timing Changes with Age: DLMO Patterns Across the Lifespan

Tags: DLMO, Age Differences, Melatonin Timing, Sex Differences

October 22, 2025

How Does Melatonin Timing Change as We Age and Between Men and Women?

Melatonin timing shows significant changes across the lifespan and between sexes, with DLMO (Dim Light Melatonin Onset) occurring progressively earlier with aging and showing consistent differences between males and females. Research reveals that children and teenagers have later DLMO timing (often after 10 PM), adults show intermediate timing (8-10 PM), and older adults demonstrate earlier timing (6-8 PM). Additionally, females typically show DLMO occurring 30-60 minutes earlier than males at most ages, reflecting fundamental differences in circadian timing between sexes.