Education

University of London

Guy's Hospital Medical School

Harvard University

Notable Publications / Research / Media, etc.

10 books and 164 scientific peer-reviewed articles on light, circadian clocks, fatigue and health

Areas of Expertise

Metabolic, Longevity Medicine, Preventative Medicine, Sleep / Circadian

In simple terms, what is your specialty?

Dr Martin Moore-Ede is a former Harvard Medical School professor and a world-leading expert on circadian clocks and how light impacts human health and productivity. His latest book THE LIGHT DOCTOR: Using Light to Boost Health, Improve Sleep and Live Longer is an Amazon best seller and was just named a Best Book of 2025 by Kirkus Reviews

Why is this critical for healthspan (not just lifespan)?

Regular morning exposure to natural outdoor daylight and avoidance of blue-containing light during nocturnal hours is a major determinant of healthspan. Getting outside everyday can add years to your health span and lifespan because it reduces the risk of obesity, diabetes, and heart disease. psychiatric illness, immune disorders and breast, prostate and colorectal cancers. Exposure to excessive light at night increases the risk of these conditions and shortens healthspan.

What is one misconception about your field?

Thinking that melatonin is the sleep hormone. It actually is the signal the body uses to inform the cells. organs and metabolic processes that it is dark outside and time to go into the repair, and restore mode. At normal physiological levels melatonin does not cause sleepiness. Only in excessive pharmacological doses will it cause drowsiness,

What early warning markers do most people overlook? And what happens long term if this area is ignored?

When sleep patterns become irregular, with inconsistent bedtimes or irregular wake-up times, or sleep becomes disrupted with frequent awakenings, this is an indicator of a sleep-wake disorder, or that that your circadian system is not robustly entrained to the natural 24-hour day-night cycle. Weak circadian entrainment is a harbinger of metabolic and immune disorders and other health risks.

What does traditional healthcare get wrong about prevention?

Counselling people to stay out of the sun because of the risk of skin cancers from UV exposure. In reality, the risk is small and is dwarfed by the risk of staying indoors. For every life saved from malignant skin cancers by avoiding the sun, 75 lives will be lost from early death from cardiovascular disease and other causes because of the lack of sunlight exposure.

Why does advanced biomarker testing and tracking matter?

Identifying changes in the timing of physiological processes before serious consequences arise give us a critical head start in correcting and heading off developing medical and psychological problems. Wearables that detect a person’s exposure to light and dark around the clock, and their sleep/wake and activity patterns give us insight into how well their circadian system is adapted to the natural 24 hour day-night cycle.

Was there a defining moment in your career?

There was not a single defining moment, but several key moments come to mind.

1. The opportunity to build a research laboratory at Harvard Medical School and recruit a highly talented team which defined the human circadian system, including the discovery of the location of the master circadian pacemaker in the brain, and showing how it was synchronized by light and dark..

2. The formation of the international consulting firm, CIRCADIAN, to address the challenges of 24/7 work in the global economy.

3. The recognition of the health problems created by electric light at night, and the identification of a narrow band of blue wavelengths that synchronize circadian clocks during the day but cause disruption and ill health at night.

4. The development of the first evidence-based circadian lights and the demonstration of their effectiveness in the real-world operations of 65 Fortune 500 companies.

Why did you join EverSpan Life?

To help translate the science into practical solutions that will extend lifespan and healthspan

What excites you most about ESL’s mission?

To join a multidisciplinary team devoted to helping people live their best lives.

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