Chronic Insomnia Root Causes: What Dennis's Labs Revealed After Decades of No Sleep

Key Takeaways
- Dennis had been struggling to fall asleep since his 20s, getting three to four hours of fragmented sleep a night despite completing multiple mental sleep programs — because none of them looked at what was happening in his body.
- His functional labs revealed hormone imbalances, dysregulated cortisol, depleted neurotransmitters and minerals, low melatonin, and significant bacterial overgrowth and inflammation in the gut — all of which were directly disrupting his sleep.
- Once those underlying imbalances were addressed through targeted supplementation and dietary changes, Dennis went from barely sleeping to seven or eight hours a night within about a month.
You've done the sleep programs. You've built the wind-down routine. You've worked on the mental side of sleep, the positive thinking, the behavioral strategies. And you still can't sleep.
That was Dennis. He'd had trouble falling asleep since his 20s — and by the time he came to me, he was getting three to four hours a night of severely fragmented sleep. He'd wake up, fall back asleep, wake up again. Night after night. He described it as torture.
He wasn't someone who hadn't tried. He'd completed Sleep Science Academy and Sleep Reset. He understood the cognitive and behavioral frameworks around sleep. He'd done the work. It just didn't help — because none of those programs looked at what was actually going on inside his body.
"I Thought I Was in Pretty Good Shape"
When I asked Dennis what his health was like before we started working together, he said something I hear often: "I thought I was in pretty good shape." He felt okay on the surface. His regular doctor's labs probably looked fine.
But when we ran his comprehensive functional labs, what came back told a completely different story.
His hormones were significantly out of balance — cortisol, testosterone, and more. His melatonin was notably low, which isn't something I see in every client. Low melatonin can be a sign of poor gut health, since most of your body's melatonin is actually produced in the gut, not the brain. His neurotransmitters and minerals were depleted. And in his gut, we found substantial bacterial overgrowth and inflammation.
Every one of those findings had a direct line to his sleep.
Why the Mental Work Couldn't Touch It
Here's the piece Dennis put his finger on better than almost anyone: he knew the mental side of sleep. He'd been through the programs. He understood what he was supposed to do. But he could almost predict when he wasn't going to sleep — because his cortisol was spiking right before bedtime instead of tapering off the way it should.
That's a biological problem, not a mindset problem. When cortisol is building at night instead of dropping, you're wired and alert at the exact moment you're trying to wind down. No amount of sleep hygiene or positive thinking overrides a cortisol curve that's running backwards.
The same goes for everything else we found. Depleted neurotransmitters affect your brain's ability to quiet down. Gut inflammation and bacterial overgrowth affect melatonin production, protein absorption, and whole-body inflammation. Low minerals affect nervous system regulation. These aren't things you can think your way out of.
What Actually Changed
Dennis followed the supplement protocol closely — his word was "almost religiously." He also increased his water intake, since he hadn't been hydrating adequately, and added more protein to his diet. Both of those changes mattered because his body needed the raw materials to rebuild depleted neurotransmitters and minerals.
The improvement wasn't overnight. About a month in, he started seeing real progress. He describes it as a gradual ramp-up, taking a couple steps forward, then falling back a little, then continuing forward. That's normal, and it's part of why the bi-monthly check-ins were important — they helped course-correct when needed.
By the end of the program, Dennis was sleeping seven to eight hours a night. He'd gone from a night where two or three hours felt like a win to consistently sleeping through. His energy, which had been essentially non-existent, was also coming back.
He still has the occasional off night. Everyone does — I do, my husband does, and he's a great sleeper. The difference is that for Dennis, a bad night is now an outlier, not the baseline.
What His Doctor Never Tested
Dennis went to sleep studies. He had all the wires attached. The result was confirmation that he wasn't sleeping — which he already knew. Nothing that came back from conventional medicine gave him a path forward.
What was missing was a look at his underlying biological chemistry: cortisol timing, hormone levels, gut health, neurotransmitter status, mineral balance. His doctor wasn't running any of that. Most don't.
The Complete Sleep Solution program runs all of it — not as a fishing expedition, but because sleep is downstream of everything happening in your body. Hormones, gut, neurotransmitters, and toxins can all drive insomnia, and without looking at them directly, you're guessing.
Dennis's story isn't unusual. Most of my clients have tried the mental and behavioral approaches first. They work for some people. But if you have real biological imbalances driving your sleep problems — and most people with chronic insomnia do — you need to identify and address those directly.
FAQ
Q: I've tried sleep programs and CBT-I and nothing has worked. What else is there?
A: If you've done the behavioral and cognitive work and still can't sleep, the issue is likely biological — not psychological. Functional lab testing looks at hormones, cortisol patterns, gut health, neurotransmitters, and mineral status to identify what's actually driving the problem. Dennis had done multiple sleep programs before working with me and saw no improvement until we addressed his underlying imbalances.
Q: Can hormone imbalance cause insomnia?
A: Yes. Cortisol timing is one of the most common drivers of sleep problems I see in clients. When cortisol is highest right before bed — instead of tapering off through the evening — it creates a state of alertness and activation at exactly the wrong time. Dennis's cortisol was peaking five to ten minutes before bedtime, which is the opposite of what a normal healthy cortisol rhythm looks like.
Q: Can gut problems cause insomnia?
A: Yes, and this is one of the most overlooked connections in sleep medicine. Most of your body's melatonin — the hormone that regulates your sleep-wake cycle — is produced in the gut, not the brain. When you have bacterial overgrowth or gut inflammation, it can suppress melatonin production and keep you from sleeping deeply. Dennis's gut findings helped explain why his melatonin was so low.
Q: How long does it take to see improvement with this approach?
A: For Dennis, it was about a month before he started seeing meaningful progress. The changes were gradual — not a sudden flip — and continued to compound over time. Most clients follow a similar arc: early changes, a period of adjustment, and then real, sustained improvement as the underlying imbalances get resolved.
Ready to Find Out What's Actually Keeping You Awake?
If what happened with Dennis sounds familiar — you've tried the programs, you understand the sleep hygiene, and none of it has moved the needle — the reason is probably the same. Nobody has looked at what's happening inside your body.
That's exactly what the Complete Sleep Solution program investigates. It includes comprehensive functional lab testing covering hormones, cortisol, gut health, neurotransmitters, and more — so we're not guessing about what's driving your insomnia. We know.
→ Learn how the Complete Sleep Solution program works
The first step is a free consultation. We'll talk through what's going on with your sleep, what you've already tried, and whether the program is the right fit for you.
→ Book a free Sleep Better Consultation
About Martha Lewis
Martha Lewis is a certified Functional Diagnostic Nutrition practitioner and founder of The Sleep Detective™. Since 2019, she has helped 300+ clients identify the root causes of their insomnia using functional lab testing — including gut analysis, hormone panels, neurotransmitter testing, and toxin screening. She discovered her own root causes (hormone imbalances, heavy metals, and a parasite) after years of trying conventional sleep solutions, and now uses the same investigative approach with her clients.
Learn more about Martha →
