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In this episode, I'm going to show you every major biological reason your body might be fighting sleep — your gut, your hormones, your cortisol, your blood sugar, your liver. By the end, you'll finally understand what's actually driving your insomnia.


00:00 Why You Can’t Sleep

00:55 Jane’s 2 AM Wakeups

02:07 The Missing Biology

02:57 Cortisol 

03:43 Sex Hormones 

04:39 Gut Health 

05:35 Neurotransmitters 

06:31 Toxins 

07:27 Liver Detox 

08:03 Inflammation 

08:57 Blood Sugar 

09:35 Diet 

10:33 Nutrient Deficiencies

11:33 Putting It All Together

12:09 Next Steps and Jane’s Results


Episode Transcript


[00:00:00] You are exhausted, but the moment your head hits a pillow, something just switches on. You can't fall asleep or you wake up at 2:00 AM and lie there for hours. You've done the sleep study, you've tried CBTI, you've had your doctor run blood work and everything came back fine, and you're starting to wonder if something is just broken.


I've lived through this myself, and I now work with clients with chronic sleep issues every day in my clinical practice. The one thing they all have in common, nobody ever looked at the biology underneath their sleep problem.


That's what this episode is. I'm going to show you every major biological reason your body might be fighting, sleep: your gut, your hormones, cortisol, blood sugar, and so on. So by the end, you'll finally understand what's actually driving your insomnia. And once you know your cause, you have a path forward.


So let's get into it.


I want to start with a client of mine named Jane. She came to me after months of broken [00:01:00] sleep that started before pregnancy and continued after pregnancy. So she was falling asleep, fine, but waking up at 2:00 AM and lying there wide awake, exhausted, but unable to get back to sleep. She tried melatonin, CBD, meditation apps. Her doctor ran blood work and of course, everything came back normal.


So I ran my own tests, and here's what I found. She had a parasite, she had mold toxicity. She was low in potassium, magnesium, sodium. And she was low in serotonin, which surprised her completely because she said, I'm not depressed. That's not me. But our bodies use serotonin as a sleep signal, and hers was running low.


And then there was a blood sugar piece. So Jane had gestational diabetes during pregnancy and had no idea that her nighttime blood sugar crashes were triggering cortisol spikes that were jolting her awake at 2:00 AM like clockwork.


Nobody had connected [00:02:00] any of these dots for her. Not one doctor, not one sleep specialist. That's a problem. And that's exactly why we're here today.


If you're lying awake at night and you don't know why, the answer is almost always biological. Something in your body's chemistry is outta balance. And there isn't just one thing, there are entire systems that can go wrong if you're dealing with not being able to sleep normally. So I'm gonna walk you through every single one.


Quick pause before we continue. If you're listening to this and thinking, okay, but how do I figure out which one of these is actually causing my insomnia? That's exactly what I help people do in my practice. Chronic insomnia is almost always biological, but it's rarely just one thing.


It's usually a pattern of imbalances that need to be identified and addressed in the right order. If you want help in covering what's actually driving your sleep problem, you can book a consultation with me using the link in the description.


All right. Here are all 10 biological [00:03:00] imbalances that disrupt sleep.


So number one, it's probably not surprising, is cortisol. So cortisol should be high in the morning to wake you up and low at night to let you sleep. But, with chronic sleep issues, this rhythm gets inverted. So you feel wired at night and groggy in the morning, and your body's stress response system gets stuck in this on position.


This can happen from chronic low grade stress, from over training from Undereating. Of course, from not getting enough sleep, but here's what you may not know. Many of the other biological imbalances I'm going to walk you through right now can also make cortisol high. It's not just about mental stress, it's also can be biological stress.


Now, second biological imbalance that I see have to do with sex hormones. So estrogen, progesterone, testosterone all play a direct role in sleep.


Progesterone is naturally calming and sleep promoting. When it drops, [00:04:00] as it doesn't perimenopause or after pregnancy, or as we get older in both women and men, sleep often falls apart.


Estrogen fluctuation drive, night sweats and temperature dysregulation that can fragment sleep, again for both women and men.


And testosterone matters too. So low testosterone in both men and women can reduce sleep quality and depth. But high testosterone can also be overstimulating, make it really hard to wind down.


So hormone balance is the key here. Too much or too little in any direction affects your sleep, and they need to be balanced with each other.


So the third imbalance has to do with gut health. Now, many people think of the gut as a digestion issue, but it's actually one of the most powerful drivers of sleep disruption. When you have leaky gut, pathogens, parasites, or an overgrowth of bad bacteria, it triggers inflammation throughout the body, [00:05:00] especially at around two or 3:00 AM. And that inflammation directly interferes with sleep because then the body releases cortisol.


Then there's a neurotransmitter piece as well. So 90% of serotonin, GABA, melatonin are made in the gut. So if your gut isn't healthy, your body is literally unable to make these calm and relaxing chemicals that it needs.


So you can take all the melatonin supplements you want, but if your gut isn't producing it naturally as well as the other neurotransmitters, it's not really gonna be enough to help.


So that brings me to the fourth imbalance: neurotransmitters. So our brain runs on these chemical messengers called neurotransmitters, and they need to be in balance for sleep to happen. Maybe you've heard of the calming ones, serotonin, which converts into melatonin. Gaba, our brain's natural anti-anxiety switch. And dopamine imbalances can also [00:06:00] affect your ability to feel settled and relaxed.


But then they're also stimulating neurotransmitters, so things like glutamate and histamine. And when these are elevated, they keep your brain in a state of high alert, even when you're exhausted. So you can be so tired, but neurologically you're wired, your brain won't shut off.


So this is why so many people with sleep issues describe lying there with a racing but exhausted mind because the biology is pulling in these two different directions.


So the fifth biological thing I see is toxins. And of course most people aren't connecting their toxic load to their sleep, and we don't even know how many toxins are in the body unless we test.


So heavy metals like mercury and lead. Mold toxins, pesticides and environmental chemicals all interfere with the nervous system. They disrupt hormone production. They impair neurotransmitter [00:07:00] pathways that our body relies on to fall asleep. Mold toxicity in particular, is one of the most underdiagnosed drivers of chronic sleep that I see in my clients who have been to multiple practitioners and still haven't gotten better. It's because this is usually the thing that has been missed. So if you've ever lived or worked in a water damaged building, or if nothing else has explained your sleep problems, toxins are definitely worth investigating.


Now, the sixth thing I see has to do with liver and detox. So your liver does its deepest detox work between one and 3:00 AM, the same window when many people are waking up in the night.


So if your liver is congested or your detox pathways are sluggish, that process is going to become even more disruptive. When the liver's overburdened, it also struggles to metabolize hormones properly. So that means that excess estrogen, cortisol, and other hormones that should be cleared are recirculating in your [00:08:00] body at night, keeping you alert when you should be asleep.


Number seven has to do with inflammation in general. Chronic inflammation is like a low grade fire burning inside your body that your nervous system can't ignore. It activates your immune system, it elevates stress hormones, and directly suppresses the production of melatonin and serotonin. And then inflammatory cytokines, which are the chemical signals your immune system releases, are known to fragment sleep and reduce deep sleep specifically.


Now, the sources of these inflammation are often hidden. We don't know they're there. But it can have to do with leaky gut, with food sensitivities, with hidden infections like pathogens with blood sugar dysregulation, with toxins. So all of these things that I'm talking about can all cause inflammation.


You won't necessarily feel inflamed, but it's showing up in your sleep.


So that leads me to [00:09:00] blood sugar. This is one of the most often overlooked causes of middle of the night waking especially. And here's what happens. Your blood sugar drops during the night. Your body treats it as an emergency. It releases cortisol to bring blood sugar back up, and that cortisol spike is going to wake you up, usually between one and 3:00 AM. Sound familiar?


If you're waking at the same time every night, blood sugar is one of the first things to investigate that and back to the pathogens in the gut. So what you eat for dinner, whether you eat too late, your overall insulin sensitivity, all play a role.


And then of course, our diet is going to affect our sleep. What we eat directly affects your sleep chemistry and not just in obvious ways. So, inflammatory foods are gonna disrupt gut health. They're going to drive cortisol. They're going to impair neurotransmitter production. Gluten and dairy are common culprits for people who don't realize that they have a sensitivity.


And [00:10:00] alcohol, even one drink fragments sleep in the second half of the night.


Now meal timing matters too. So eating too close to bedtime keeps your body in a digestive active state when it needs to be shifting into that repair and restful state. And here's one many people miss. You need enough quality, fat, and protein to make neurotransmitters and hormones in the first place.


So if you're undereating, especially protein, your body doesn't have the raw materials to make the sleep chemicals it needs.


Now the 10th and final biological cause that I see all the time has to do with nutrient deficiencies, so your body can't make sleep hormones without the right raw materials. Magnesium is essential for GABA production and to calm the nervous system, and many people are deficient.


Vitamin B six is required to convert tryptophan into serotonin. B vitamins as a whole are critical for [00:11:00] liver detox, so again, if your liver can't clear hormones and toxins sufficiently, then your sleep is going to suffer.


Zinc supports melatonin synthesis. Low iron causes restless legs and fragmented sleep. Vitamin D deficiency is linked to shorter sleep duration.


So again, there's so many these vitamins, minerals, nutrients that aren't optional. They are actually the biological building blocks of sleep, and if they're missing, no amount of sleep hygiene is going to make up for that.


Now I want to be clear. These are the biological causes and they're the ones most people have never investigated. They're not the only piece of the puzzle. I also work with clients on nervous system dysregulation, on sleep anxiety, on their thoughts about sleep, because the mental and emotional side of not sleeping is real too. In fact, for many people, it's biological imbalances that created the anxiety around sleep in the [00:12:00] first place. So it's never just one or the other. But if you're already done the mental work and you're still not sleeping, then you want to look at these biological causes next.


So here's what I want you to take away from this. Every single calls I walked you through is testable. It's findable. It's fixable.


The reason you're not sleeping, even after trying everything, is almost certainly not because your body is broken and can't be fixed. It's just because nobody has looked at your biology at this level of depth.


So go back through that list and notice which categories resonated with you. Are you waking between one and 3:00 AM? Look at blood sugar, liver detox, gut pathogens.


Have you been through pregnancy, perimenopause or a long period of stress. Look at cortisol and sex hormones. Have you ever had gut issues, skin problems, or immune challenges? Start with the gut. Have you lived in a moldy building or felt like nothing has ever fully explained your sleep problems? Definitely look at toxins.


The good news is you don't [00:13:00] have to guess which one applies to you. The right functional testing looks at all of these symptoms at once and gives you a clear picture of what's actually going on in your body.


Remember Jane, the client I told you about at the beginning? Parasites, mold toxicity, low serotonin, blood sugar crashes. None of it showed up on standard blood work. But once we found it, everything changed. Within three to four months, she was falling asleep easily, sleeping six to seven hours straight and waking up actually rested.


She told me she hosted a big lunar New year party for her whole family, cooked the entire feast herself, and said six months earlier, she wouldn't have had the energy to even attempt that. So that's what finding your biological cause does. It gives you your entire life back.


And if you want to hear her full story, you can watch her video right here.

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