Your body runs on a schedule. Almost nobody is checking whether yours still keeps time.
Dr. Martin Moore-Ede
He spent twenty-three years at Harvard Medical School working out how that schedule is set. He advises the EverSpan Life care team on what it looks like when it slips.
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01Harvard Medical School faculty, Department of Physiology, 1975–1998
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02The Clocks That Time Us — Harvard University Press
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03Co-author, Science, 1980 — human sleep timing and circadian phase
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04200+ publications · Director, Circadian Light Research Center
What his laboratory established
Then, in 1980, his group published a result in Science that still reorders people's intuitions about sleep.
How long you sleep turns out to depend less on how long you have been awake than on where you are in your body's own 24-hour cycle. Lie down at one point in that cycle and sleep can end after four hours, with no way back down. Lie down at another and the same person sleeps past ten.
The clock, in other words, is not a passenger of tiredness. It is the thing setting the terms.
The thing most people get wrong about melatonin
Only in large pharmacological doses does it make you drowsy - and drowsiness there is a property of the dose, not of the message the body sends itself every night.
Which is why the useful lever is not a supplement. It is light. Daylight early in the day, less light in the hours before bed. Both cost nothing, and neither requires anyone's permission.
Circadian disruption doesn't have its own blood test
When the clock drifts it does not announce itself. It shows up somewhere else - in how the body handles sugar, in thyroid conversion, in inflammatory tone, in sex hormones. Each of those has a marker on the EverSpan panel. None of them says circadian on it.
HbA1c
How glucose has been handled over months, not this morning.
Fasting insulin
How much work it takes to keep that number where it is.
hs-CRP
Background inflammatory tone, quiet but persistent.
Free T3
Whether thyroid hormone is being converted to its active form.
Free testosterone
The fraction actually available to tissue.
DHEA-S
An adrenal reserve marker that moves slowly and tells on strain.
Reading one number is easy. Reading the pattern across several, over time, against the life someone is actually living, is the work.
That is what an ongoing clinical relationship is for. Your care team holds the whole series, not the single result.What he does here, and what he doesn't
Dr. Moore-Ede does not see EverSpan Life members. He advises the clinicians who do - on what the research supports, what it doesn't, and where the evidence is still thin.
Your care team reads your panel. His work is part of why they know what to look for in it.
Three questions, answered in his words
"Almost everything we measure in a person varies by time of day - glucose tolerance, body temperature, hormone release. The clock is the timebase all of it runs on. If that timebase is out of step with the day, you are looking at a body working against its own schedule. It isn't a niche interest. It sits underneath the rest."
"Irregularity, rather than shortness. Bedtimes and wake times that move by two hours across a week, or a night that comes apart into three or four pieces. That pattern suggests the clock is not well synchronised to the day–night cycle. Most people file it under sleeping badly and stop there."
"The advice is easy to give and hard to follow through on. I have spent a career describing what light and timing do. What a laboratory cannot do is stay with one person for two years and watch what their markers do while they try it. A care team can. That is the part I have never had access to."
Material connection: Dr. Martin Moore-Ede is a member of the EverSpan Life Scientific Advisory Board and has a material relationship with EverSpan Life. He is also the founder of CIRCADIAN Technologies, holds patents on circadian lighting systems, and serves as Chief Medical Advisor to Korrus, a lighting company. EverSpan Life does not sell, endorse or receive compensation from any lighting product.
Acting on it without measuring it is guesswork
Change the light, change the timing - then find out what moved. A first panel gives your care team a baseline to read everything after it against.
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