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You Can’t Optimize Your Way Out of Bad Sleep!

🎧 Prefer to listen? About 24 minutes.
The whole article read as a conversation: what short sleep does to testosterone, insulin and weight, why cortisol is the messenger rather than the cause, and the free fixes worth doing first.

Contents

In my functional medicine practice in Fairfield, CT, I stress the same four determinants of health at nearly every visit: sleep, nutrition, exercise, and psychological/spiritual well-being. I was making the case for restorative sleep long before I gave functional medicine any thought or knew what it was. I’m a board-certified endocrinologist, and sleep was in my hormone conversations from the first year of practice, because the labs kept dragging it in. Proper sleep hygiene is violated so routinely, by so many otherwise careful people, that I decided to write it down once and properly.

Here is what the violation looks like in my office. A man comes in with fatigue, a thickening waistline, and a total testosterone of 310. He has read about testosterone optimization. He wants the prescription. Twenty minutes into the visit I learn that he sleeps five and a half hours a night and has for a decade.

I don’t write that prescription first.

Sleep is the determinant people trade away, because it’s the only one that feels free at the moment you spend it. The extra hour of work. The last episode. The phone. It isn’t free. It shows up in the labs I order every day. Start with what healthy sleep is made of, because you can’t protect something you can’t picture.

What sleep actually is

Sleep is two different states taking turns.

Non-REM sleep is everything that isn’t dreaming sleep. REM stands for rapid eye movement, which is what your eyes do under the lids while you dream. Non-REM starts light and sinks into deep sleep, also called slow-wave sleep, named for the big slow waves it throws on an EEG, the recording of the brain’s electrical activity. Deep sleep is where most of the physical restoration happens. Heart rate and blood pressure fall, and the body goes to work on itself.

REM is the dreaming state. The brain is roaring while the body lies paralyzed, which the Berkeley sleep scientist Matthew Walker points out is the only thing standing between you and acting out the dream. REM handles emotional processing and a good deal of memory consolidation. Walker calls it overnight therapy, and after twenty-three years of watching what happens to people who don’t get it, I think that is the right name.

You cycle between the two about every ninety minutes. Now the part almost nobody knows: the two aren’t distributed evenly across the night. Deep sleep is loaded into the first half. REM is loaded into the second, concentrated in the last two hours before you wake up.

That changes what your shortcuts cost. Same hours missing, different organ system paying, and here is the bill for each.

Stay up two hours late and get up on schedule, and you cut deep sleep. The largest pulse of growth hormone you release all day comes during deep sleep in the first half of the night. In adults, growth hormone maintains lean mass, repairs tissue, and keeps visceral fat in check. Cut the front of the night and you cut the pulse. Do it nightly and you’re throwing away, for free, the very thing people then pay a peptide clinic to give back to them.

Set the alarm two hours early, and you cut REM, nearly all of it. What goes with it is the overnight therapy: people short on REM are irritable, emotionally raw, and forgetful, and they know it by lunchtime. Walker’s observation, after twenty years running a sleep center, is that there’s no major psychiatric disorder in which sleep is normal. REM is where the emotional recalibration happens, and the early alarm is where it gets skipped.

What else you lose

Growth hormone is the one hormone you can tie to a specific hour of the night. Lack of sleep affects the other hormones too, no matter which part of the night gets cut. Here is the important thing to remember: lack of sleep disrupts hormones far more than hormones disrupt sleep. There are exceptions, and hormone abnormalities can and do wreck sleep, but the arrow from insomnia to hormone disturbance is much thicker than the one pointing back. Here are the important examples.

Testosterone. Bad sleep is a testosterone killer, and the data aren’t subtle. At the University of Chicago, ten healthy young men were held under five hours in bed for eight nights. Daytime testosterone dropped 10 to 15 percent. The investigators’ own comparison: one week of short sleep aged those men 10 to 15 years hormonally. The 5 a.m. alarm to get to the gym is cutting into the very hormone the gym is supposed to raise. So when the man with the 310 and the five-hour nights asks for the injection, the answer is no, not first. Fix the sleep. Exercise. Deal with the weight. Testosterone climbs back on its own, and without shutting down your own production, which is what injected testosterone does. That holds for functional and secondary hypogonadism, where the testicles are capable but the signal from the brain is suppressed. It doesn’t hold for primary hypogonadism, where the testicles themselves have failed. Different diseases, different treatments, and telling them apart is a lab draw and a conversation. More on the people who skip that conversation below.

Estrogen and the cycle. Women aren’t exempt; they’re studied less. The signal that gets suppressed in a sleep-deprived man, the pulse from the hypothalamus and pituitary that drives the gonads, is the same signal that runs ovulation. Women who work rotating night shifts have more irregular cycles, and disrupted sleep alters the pulses of LH, the pituitary hormone that triggers ovulation. Irregular periods in a woman sleeping five hours are a sleep question before they’re a hormone question, and I ask it now.

Insulin resistance. Insulin resistance means your cells stop listening to insulin, so the pancreas has to shout louder and make more of it. Sleep loss drives this two ways. Directly: eleven healthy young men cut to four hours in bed for six nights took roughly 40 percent longer to clear a glucose load, and their insulin response fell about 30 percent. Young, lean, healthy men, briefly pre-diabetic on paper, from short sleep alone. Indirectly, and this is the bigger effect in real life, short sleep makes you hungrier and lazier the next day. In a series of studies, Marie-Pierre St-Onge’s group at Columbia restricted sleep and measured what happened. Men showed higher ghrelin, the hormone that turns hunger on. Women showed lower GLP-1, the satiety signal that Ozempic and Mounjaro imitate. Brain imaging showed reward centers lighting up harder for food. Turned loose at the buffet, people ate about 300 extra calories.

Nobody makes that choice consciously. You aren’t weak-willed at four in the afternoon after five hours of sleep. You’re running on altered hormones. Then fatigue does the rest: the tired body doesn’t go to the gym, it takes the elevator, and the calories that came in don’t go out. Fatigue, appetite, inactivity. That’s how five hours of sleep becomes fifteen pounds.

Inflammation. The inflammatory markers in the blood, the same ones we track for cardiovascular risk, rise with sleep restriction and stay up in chronic insomnia.

Cortisol. It rises when sleep is short, and it behaves nothing like the internet says it does. It gets its own section.

The gut. For my patients who ask about the microbiome, and many do: two nights of short sleep measurably shifts the bacterial population of the gut in healthy volunteers. Whether that shift does anything to you isn’t established, so I list it as a finding, not a diagnosis.

Both of the controlled experiments above, the testosterone and the glucose, reversed with recovery sleep. The damage isn’t permanent, and that’s the whole reason this article exists.

📞 Bad sleep showing up in your labs? Start with the sleep.

Testosterone, insulin, cortisol and weight all read the sleep before they read anything else, and most clinics treat the number without ever asking about the pillow. Call (203) 760-5544 to schedule a comprehensive hormone evaluation in Fairfield, CT.

Cortisol is the messenger, not the cause

Cortisol is having a moment, and most of what is being said about it is backwards.

Start with what cortisol actually is, because the internet has reduced it to a villain. Cortisol is a maintenance hormone before it’s a stress hormone. It holds your blood pressure up when you stand. It keeps blood sugar available between meals and overnight. It’s the surge that wakes you in the morning, which is why it belongs high at 7 a.m. and low at 11 p.m. It regulates the immune system, and it steers how the body uses fat and protein. Lose it entirely and you end up in an emergency room; that disease has a name, adrenal insufficiency, and I treat it.

It’s also the stress hormone, and here is where the confusion starts. When the body is under load, cortisol goes up. Sleep loss is a load. In the sleep-debt experiment above, cortisol rose in the afternoon and evening, and it rose because the men were sleep-deprived. The cortisol did not cause the sleep loss. It reported it. Rising cortisol is the body mobilizing its resources to deal with stress properly. In fact, if cortisol does not rise under stress, that’s the adrenal insufficiency I mentioned a moment ago, and it’s a big problem. Unless we’re talking about Cushing’s syndrome, a genuine disease of cortisol overproduction, cortisol is the messenger of stress, not the primary reason for the metabolic derangements that follow it. Shooting the messenger has never once fixed the message.

One more detail, because the saliva test is coming up. People with chronic insomnia don’t walk around with high cortisol all day. In 24-hour sampling, Walker notes, they look like good sleepers most of the time, with rises at exactly the moments they can’t fall asleep or get back to sleep. The needle moves when the sleep breaks.

None of this means sustained high cortisol is harmless, and “it affects the brain” is too vague to be useful, so here is what it actually does. Cortisol acts on the hippocampus, the brain’s memory center, which is dense with cortisol receptors. Sustained high levels shrink it, and memory goes with it. In older adults followed for years, those whose cortisol ran high had smaller hippocampi and worse recall, an observed association. In Cushing’s disease, where cortisol is pathologically high, the hippocampus shrinks and then partly regrows after cure, which is the stronger evidence. High cortisol also weakens the prefrontal cortex, the part of the brain that plans and resists impulse, and it sensitizes the amygdala, the fear center, which is why chronically stressed people are jumpy and anxious even at rest. That damage is real, and it comes from months and years of elevation, not from a bad week.

So the sequence matters: bad sleep raises cortisol, and chronically raised cortisol harms the brain, the waistline, and the immune system. The fix isn’t to suppress the cortisol with a supplement while the sleep stays broken. The fix is the sleep, and the cortisol follows within days, because it was only ever reporting.

Who is treating you

That distinction, cause versus messenger, is where a great deal of modern hormone care goes wrong, and I’m going to be specific.

The low-T storefront treats the number. A man walks in with a 310, walks out with a vial, and nobody asks about the pillow. Nobody checks the pituitary. Nobody distinguishes a testicle that has failed from a brain that is suppressed by five hours of sleep, and so a man with a fixable problem is put on a lifelong drug that shuts off his own production. I have written about this before, and I see the consequences in my office regularly.

The conventional clinic does something quieter. It nods at sleep, hands over a pamphlet, and writes for Ambien or trazodone, because there are eleven minutes and the pamphlet is faster than the conversation.

And the holistic clinic, which should know better, has built an industry on the messenger. Adrenal fatigue. The saliva cortisol panel. The six-month protocol of adaptogens and cortisol-lowering supplements, launched on a patient who is still up at 2 a.m. answering email. It prints “root cause” on the website and then treats the readout on the gauge. Backwards. All of it.

I run a functional medicine practice. I am not attacking the field. I’m attacking the shortcut, wherever it’s sold. Here is what the root cause actually looks like, hour by hour.

Sleep hygiene is a 24-hour job

The mistake almost everyone makes is treating sleep hygiene as something that starts at 10 p.m. It starts when you open your eyes. Your body runs an internal clock on a roughly 24-hour cycle, and everything you do from the first minute of the morning is either setting that clock or scrambling it. Matthew Walker offers five rules of sleep hygiene, and he prefers to call them tools rather than rules, on the grounds that people respond to reasons. I agree, so here they are with the reasons, laid across the day the way you actually live it.

Morning: light. Get outside within an hour of waking. Andrew Huberman, the Stanford neuroscientist, has done more than anyone to get this idea in front of the public, and he’s right about it. Five to ten minutes on a clear morning, fifteen to thirty when it’s gray. No sunglasses; glasses and contacts are fine. Through a window is far weaker than standing outdoors, so go outdoors. In a dark winter, a 10,000-lux light box does the job.

Morning light does two things. It anchors the clock, which is what makes tonight’s bedtime arrive on time. And it raises the morning cortisol surge, which is exactly the cortisol you want: the one that makes you alert at 8 a.m. instead of at midnight.

Morning: the same morning, every morning. This is Walker’s first rule, and it’s the one. Same wake time, same bedtime, weekdays and weekends. Walker’s line is that regularity is king, and of everything in this article it’s what I would change first in almost every patient. The weekend lie-in feels like repayment and behaves like flying to Denver and back every seven days. Your clock doesn’t know it is Saturday. If your life makes this impossible, and for shift workers, new parents, and people on call it genuinely is, hold the anchor you control, which is usually the wake time, and let the rest drift. This is a constraint to manage, not a personal failing.

Midday: caffeine has a cutoff. Caffeine has a half-life of five to six hours, meaning half the dose is still circulating five hours later and a quarter at ten to twelve. Walker’s rule of thumb is to stop about ten hours before bed. Morning coffee is fine; Walker has come around on it. The 2 p.m. cup is the one that catches people, because it usually won’t stop you falling asleep. It makes your deep sleep shallower, and you wake up unrefreshed and reach for more coffee, and around it goes.

Afternoon: naps, carefully. If you sleep well at night, a nap of 20 to 25 minutes before mid-afternoon does you good. If you don’t sleep well at night, don’t nap. You’re letting the pressure out of the system you need full at bedtime.

Evening: dinner and drinks. Marie-Pierre St-Onge at Columbia keeps three hours between her last meal and bed, and eating earlier is the better pattern for metabolic health generally. The dogma is stricter than the data, though. Walker’s read is that two hours is fine for most people, with real deterioration closer to forty-five minutes. Meal size matters more than the clock; a steak dinner needs more runway than a bowl of soup. What you eat matters too. In St-Onge’s controlled feeding studies, more fiber tracked with more deep sleep, more saturated fat with less, and more refined carbohydrate with more arousals, meaning brief shifts into lighter sleep that fragment the night without ever waking you enough to remember. You can sleep eight hours and get robbed. And stop the fluids early. A late glass of anything fills the bladder, and the trip to the bathroom is one of the commonest ways people lose the back half of the night.

Alcohol gets its own paragraph, because it’s the most misunderstood sleep aid in the world, and it is not a sleep aid at all. Alcohol is a sedative, and sedation is not sleep. It knocks you unconscious, fragments the night into dozens of brief awakenings you won’t remember, and blocks REM, which is why people who quit drinking get ambushed by vivid dreams. Walker’s data show that even an afternoon glass of wine leaves a measurable mark on that night’s sleep. Have the wine at the celebration and accept the tradeoff. Don’t have it as a habit and call it medicine. That’s Walker’s fifth rule, alcohol and caffeine, and now both halves of it are where they belong in the day.

Evening: dim the house. Walker’s second rule. Cut at least half the lights in your house in the final hour before bed and kill the overheads in favor of low warm lamps. His framing is the useful part: light holds a brake on melatonin, the hormone that announces darkness to the rest of the body, and darkness takes the brake off. Candles and firelight are fine. The system is lopsided, and this is the piece people get wrong in both directions. In the morning your clock needs a flood of light before it registers anything, which is why the kitchen ceiling fixture does nothing for you at 7 a.m. At night it needs almost none to suppress melatonin, which is why the same fixture matters enormously at 10 p.m. Then make the bedroom itself dark: blackout curtains, or an eye mask if the room will never be properly dark.

Evening: cool the room. Walker’s third rule. Aim for about 67°F. Your core temperature has to fall 2 to 3°F for you to fall asleep and stay asleep, and a cool room is what permits that drop. Warm socks and a hot water bottle aren’t a contradiction: warming your hands and feet opens the vessels there and helps dump heat out of the core. Same principle explains the hot bath, and not the way people assume. You don’t sleep better because you got warm. The heat opens the blood vessels at your skin, and when you climb out you shed heat fast and your core temperature drops. Sleep researchers call it the warm bath effect. Warm the room back up in the morning to help yourself wake.

Bedtime: land the plane. Falling asleep is landing a plane, not flipping a switch, and you can’t start the descent while you’re still climbing. Walker meditates ten minutes every night before bed, and he was a skeptic who read the data. Do that, or stretch, or read on paper. What you don’t do is take in input. Everyone talks about blue light; I care more about what you’re reading. Doomscrolling, work email, and the news at 10:30 at night aren’t neutral. They’re activation. You can’t argue with a stranger on the internet and then descend gently into sleep twenty minutes later.

Walker adds one more piece here: write the worries down an hour or two before bed, on paper, not in bed. He calls it closing the tabs on the browser before you shut the computer, and in the studies he cites it cut the time to fall asleep roughly in half. And take the clock out of the bedroom, phone included. Knowing it is 3:22 has never helped anyone.

Middle of the night: walk it out. Walker’s fourth rule. Awake more than 20 to 25 minutes? Get out of bed. The brain is an association machine, and lying there awake night after night teaches it that bed is where you’re awake and worried. That lesson takes months to unlearn and you’re teaching it right now. Go to a different room if you can, keep the lights low, and read something undemanding or listen to something dull. No email. No food, because eating at 3 a.m. teaches your body to expect a meal at 3 a.m. and now you’ve got two problems. Go back only when you’re sleepy, however long that takes.

Five rules, one day, and none of them cost anything. If you take one behavioral change from this entire article, and you aren’t going to take five, take this: put the phone in another room and buy a $12 alarm clock.

What is poisoning the well

Here is the analogy I use in the office. If you don’t charge your phone overnight and it dies at noon, you don’t go looking for a new app to fix the problem. You charge the phone. And you can’t poison a well all evening and expect wholesome water from it at night. Most of what wrecks sleep isn’t a mystery. It’s something you did, or allowed, in the six hours before bed, or something living in the bedroom itself. Go through the list honestly.

The job. I’m going to be blunt about this one, because it’s the most destructive habit in American life and it’s treated as a virtue. The laptop in bed. The email at 11 p.m. The message you answer from under the covers because it will only take a second. You’re marinating the one place that is supposed to mean sleep in the one activity that most reliably means stress, and then you’re surprised when your brain can’t tell the difference at 3 a.m. Andrew Huberman, of all people, confessed on his own podcast that as a junior professor he used to fall asleep working on grants in bed, wake in the night, work some more, and fall asleep again. Years later, when he couldn’t stop waking at 3 a.m., a former girlfriend was the one who reminded him where he had learned it. If the man who teaches sleep science to millions did this to himself, you aren’t immune. The job stays out of the bedroom. Not mostly. Out.

The screen. Television, the news, social media: every one of them is engineered to keep you engaged, which is the precise opposite of what you need. The news is the worst of the three, because it’s stress with a clean conscience. You aren’t staying informed at 11 p.m. You’re activating your threat system and then asking it to switch off.

The phone that beeps. Notifications on all night, the screen lighting up on the nightstand, the reflex to check. Do Not Disturb exists. Use it.

Pets. I know. You love them. A dog in the bed measurably reduces sleep efficiency; a dog in the room doesn’t. Move the dog to the floor. And if the dog wakes you at five every morning, that isn’t a fact of life you have to accept. It’s a training problem, and if you’re allowing it, understand that it has to be fixed one way or another: a later dinner, a closed door, a crate, an automatic feeder, a trainer if it comes to that. You wouldn’t keep a roommate who woke you at five. The dog doesn’t get a pass for being adorable. The cat will do what it wants, and you may have to close the door.

The partner who snores. Two people are losing sleep, and only one of them knows it. Earplugs and a white-noise machine for you, and a conversation with a doctor for the snorer.

Pain. Arthritic hips and shoulders wake people at the same hour night after night. Treat the pain and you have treated the insomnia.

Reflux. Acid moves more easily when you’re flat, and a late dinner makes it worse. Raising the head of the bed accomplishes more than another antacid.

Urination. Evening fluids, alcohol, diuretics taken too late in the day, and in men a prostate that has been quietly enlarging since his fifties. All of it is addressable. Bring it up.

Alcohol rebound. The nightcap puts you under and then wakes you three or four hours later as it clears.

Stimulants. Prescribed stimulants for ADHD, Adderall, Vyvanse, Ritalin, Concerta, deserve their own paragraph, because the number of adults taking them has climbed steeply in the last few years and the reasons split three ways. Some are prescribed for a real disorder that deserves treatment. Some are prescribed as performance enhancers on thin evidence of any disorder at all; I pass no judgment on the patient, but let’s be honest about what the prescription is for. And some are prescribed precisely because a person walked into an office exhausted, and the exhaustion of poor sleep was treated as a stimulant deficiency. All three end the same way far too often: the drug is never stopped, and it builds the rollercoaster. Alert by pill in the morning, crashing as it wears off in the afternoon, wired at bedtime from the second dose, five hours of sleep, exhausted again by 7 a.m., which proves the need for the pill. It’s the caffeine loop with a prescription pad, and it runs on the same logic as the vial of testosterone: treat the symptom, never ask about the pillow. If you take one of these and your sleep is bad, that’s a conversation with your prescriber about timing, dose, and whether you still need it. Don’t stop them on your own. Don’t keep refilling on autopilot either.

Other medications and energy drinks. Decongestants like Sudafed, prednisone, and thyroid hormone dosed too high all disturb sleep, and over-replaced thyroid is more common than it should be (especially T3, as in Cytomel or Armour Thyroid). Some antidepressants and blood pressure medications do it too; the fix is a conversation with the prescriber, not a supplement. And pre-workout powders and energy drinks are caffeine at doses no cup of coffee delivers, taken at 5 p.m. by people who then wonder about their sleep.

Hot flushes. A woman waking drenched at 2 a.m. four nights a week isn’t a candidate for a sleep supplement. She’s a candidate for hormone therapy. Estradiol and micronized progesterone, the bioidentical forms, are the most effective treatment for hot flushes that exists, and for a woman whose sleep is being destroyed by them this is a legitimate, evidence-backed reason to start. This is one of the cases where the prescription is the root-cause treatment.

Primary hypogonadism. The counterpart in men. If the testicles have failed, from disease, injury, chemotherapy, or genetics, the night sweats, the fragmented sleep, and the fatigue aren’t going to respond to a cooler bedroom. That man needs testosterone, and giving it to him is good medicine. The point of everything above is not that testosterone is bad. It’s that you have to know which man you’re treating.

The racing mind. Walker calls sleep-maintenance insomnia the revenge of unresolved daytime emotions, and I haven’t heard a better description. If bedtime is the only moment in your day when you aren’t taking in input, your brain will use it to process everything you postponed. The worry journal, above, is the fix.

Sleep apnea. Loud snoring, witnessed pauses in breathing, or waking unrefreshed despite adequate hours warrants a sleep study.

Cheap fixes for 3 a.m.

You’re awake, you don’t want to get out of bed, and the twenty-minute clock is running. Two things are worth trying, and they’re usually given as a pair.

The physiological sigh. Two inhales through the nose, one full and then a short top-up on top of it, followed by a long slow exhale through the mouth. Repeat. If that feels fussy in the dark, use the plain version: in for four, out for six to eight. The mechanism is the ratio. An exhale longer than the inhale slows the heart and pulls you down out of alertness.

This has better evidence behind it than most of the supplement aisle. A Stanford trial found that among 108 people randomized to five minutes a day of one of four practices for 28 days, cyclic sighing produced the largest improvement in mood and the largest drop in resting respiratory rate, beating box breathing, cyclic hyperventilation, and mindfulness meditation. The effect showed up after a single session.

Eye movements. Eyes closed, moving them gently side to side while you exhale slowly. Huberman describes this as a way to quiet the brain’s alertness circuitry. There is no trial behind it. I’m telling you that plainly, and I’m still including it, because it costs nothing, requires no equipment, and is done lying down in the dark with your eyes shut.

If neither has worked in twenty minutes, get up. The walk-it-out rule still applies, and it applies most on the nights you least want to obey it.

For a longer option there is NSDR, non-sleep deep rest, Huberman’s term for guided yoga nidra and similar deep-relaxation audio. Ten-minute recordings are free on YouTube. As a named practice the evidence is thin, low-risk and plausible rather than proven, and plenty of my patients like it.

The treatment with the best evidence is not a drug

If your insomnia is chronic, meaning most nights for months, the treatment with the strongest evidence is cognitive behavioral therapy for insomnia, or CBT-I. It’s a structured short-term program delivered by trained providers or through validated apps, and it retrains both sleep behavior and the thinking that surrounds it. The American Academy of Sleep Medicine recommends it first-line. Everything in the next two sections is adjunctive to it, not a substitute for it.

Supplements

These come after the behavior. I have no financial relationship with any product or company named here, and I take no margin on anything I recommend.

Magnesium. The foundation, and the one I reach for most. Magnesium L-threonate, sold as Magtein, crosses into the brain and carries the best sleep-specific data. Magnesium bisglycinate is cheaper, well tolerated, and delivers glycine along with the magnesium, a bonus you’ll understand in a moment. Threonate: 1 to 2 g of Magtein, roughly 144 to 200 mg of elemental magnesium, one to two hours before bed. Bisglycinate: 200 to 400 mg elemental. Loose stools are the limiting side effect and the signal to back off. Avoid it in significant kidney disease. Thorne, Momentous, Life Extension and NOW all make versions I’m comfortable with.

Glycine. 3 g, 30 to 60 minutes before bed. It works by lowering core body temperature, the same lever as the cool room and the hot bath. Very safe, very cheap.

L-theanine. 100 to 400 mg; most studies use 200. It produces calm without sedation. One real caveat: it causes vivid dreams in a noticeable minority of people, sometimes with an anxious awakening in the middle of the night. If you’re prone to nightmares or night terrors, skip it entirely.

Apigenin. 50 mg. It’s the active flavonoid in chamomile and the reason chamomile tea became a bedtime ritual centuries before anyone knew why. The mechanism is well established; the trials are thin. This is the one for people whose problem is that they can’t stop thinking. It has mild estrogen-inhibiting activity; the clinical significance at 50 mg is unclear, and women who would rather not take that on can drink the tea instead. Skip it with a ragweed allergy.

Myo-inositol. 900 to 1,000 mg, and specifically for the 2 a.m. problem: awake, alert, unable to get back down. Three or four nights a week rather than nightly. The evidence here is weak, mechanistic and anecdotal rather than trial-driven, and I won’t pretend otherwise. The safety margin is wide enough to make it worth trying.

Melatonin, and read this part twice. Melatonin is a hormone, not a sedative, and it’s the most misused product on the shelf. This is my lane, so I’m going to be direct.

Melatonin tells your brain what time it is. It does not generate sleep. Walker’s analogy is that melatonin is the starting official at a race and not one of the runners, which is exactly right.

The physiologic dose is 0.3 to 0.5 mg. Walk into any pharmacy and you’ll find 3 mg, 5 mg, 10 mg, sometimes 20 mg gummies marketed to children. That’s ten to forty times the dose that reproduces your body’s own nighttime level. More is not better, and in a hormone system more is frequently worse.

Label accuracy is genuinely bad. Independent testing has found products running from 83 percent under to 478 percent over the stated dose, and some contaminated with serotonin, which has no business being in a supplement.

Melatonin earns its place in circadian problems: jet lag, shift work, shifting a delayed sleep phase. For ordinary insomnia, meta-analysis puts the benefit at about seven minutes faster to sleep and eight minutes more of it. A real effect, a small one, and not what the twenty-dollar bottle is promising you. If you use it, use a low dose from a USP-verified brand, for a defined reason, for a defined period.

Prescription medications, by name

Classes and reasoning only; dosing is a conversation with your physician, not a blog post.

Belsomra, Dayvigo, and Quviviq are the dual orexin receptor antagonists, the newest class and the most interesting. Rather than sedating the brain, they block orexin, the signal that keeps you awake. Take the foot off the accelerator instead of stepping on the brake. They preserve normal sleep architecture including REM, they showed no tolerance over a year in their trials, and their side effects are their own: next-day sleepiness in some people and, rarely, sleep paralysis.

Ambien, Lunesta, and Sonata are the Z-drugs, named for the generics underneath: zolpidem, eszopiclone, zaleplon. They act on GABA, the brain’s main inhibitory system. I have no quarrel with them and no affection for them. They’re overused, badly, and they’re legitimate when used cautiously and responsibly, which means short-term, at the lowest dose that works, in a patient who understands what they’re taking. I prescribe them rarely. They bring tolerance, dependence, rebound insomnia when you stop, falls in older patients, and a boxed warning for complex sleep behaviors: sleepwalking, sleep-driving, sleep-eating with no memory of it. Prescribed for a bad month, they’re a tool. Refilled for a decade, they’re a second problem.

Silenor is low-dose doxepin, which at insomnia doses works almost entirely by blocking histamine, without the broader effects of antidepressant doses. It isn’t a controlled substance, and it’s aimed squarely at the patient who falls asleep fine and wakes at 3 a.m.

Trazodone is the most prescribed off-label sleep medication in the country, cheap and not habit-forming, and the sleep-specific evidence is thin enough that the guidelines recommend against it in chronic insomnia. It remains reasonable in the right patient.

None of these is where I start. All of them work better on top of the behavior than in place of it, and none of them will outrun five hours a night.

Where this leaves you

Sleep, nutrition, exercise, and your psychological and spiritual well-being hold each other up, and sleep is the one people sacrifice first and the one that pays back fastest. Nearly everything in this article that works costs nothing: morning light, the same wake time every day, caffeine done by early afternoon, a cool dark room with no job in it, and getting out of bed when you can’t sleep. Those will outperform every bottle on the shelf, and they will do it in about three weeks.

Start with regularity. Give it a month before you decide it isn’t working.

Then look at the well. If the job, the screen, the wine, or the dog is in the bedroom, no supplement is going to out-argue it.

And know when it’s time to be seen: if your sleep has been bad for months despite honest effort; if it’s already showing up in your labs as a testosterone that won’t rise, a fasting glucose that keeps climbing, or weight that won’t move; if you’re a woman drenched at 2 a.m., or a man whose night sweats and fatigue have a medical cause behind them; or if someone has already handed you a vial without asking about the pillow. That’s what an endocrine evaluation is for. Come see me in Fairfield, CT, and we’ll find out which problem you actually have before we treat it.

Schedule a Consultation in Fairfield, CT

I am a board-certified endocrinologist with twenty-three years of clinical experience, fellowship-trained at Montefiore and Albert Einstein College of Medicine and trained at Mount Sinai, with training through the Institute for Functional Medicine. You can read more about my background and approach here.

Sleep questions deserve an endocrinologist, not a prescription pad.

Restore Health LLC

501 Kings Highway East, Suite 103, Fairfield, CT 06825

(203) 760-5544

Book your consultation, see what to expect as a patient, browse the full blog archive, listen to the audio health guides, or see the areas I serve throughout Fairfield County and beyond.

Related reading: low testosterone treatment, medical weight loss, and my evidence review of peptide therapy.