The afternoon crash that only coffee or something sweet can lift.
Getting shaky or short-tempered when a meal runs late.
Waking at 3 a.m., wired, and lying there until the alarm.
Weight that settles around the middle and won’t move, no matter how carefully you eat.
And then the bloodwork comes back. Your glucose is normal. You’re told to come back next year.
So the better question may not be is my blood sugar normal?
It may be: is my blood sugar steady, and what is my body doing to keep it that way?
In short: Blood sugar dysregulation is a loss of steadiness in how the body supplies itself with fuel. It can run low, run high, or swing between the two. It often shows up in the blood, in insulin, triglycerides and HDL, years before glucose or A1c cross a diagnostic line.
Why Blood Sugar Sits Underneath Everything
If I could teach one pattern to everyone, it would be this one.
Your body, and your brain most of all, needs a steady supply of fuel.
After you eat, sugar enters the blood and insulin moves it into your cells. Between meals, as sugar starts to dip, other hormones step in. Glucagon and your stress hormones raise it back up.
The goal is a gentle, steady line through the day. Not spiking. Not crashing.
When that line is steady, you don’t think about food all day. Energy holds. Mood is even. Sleep runs through the night.
When it isn’t, everything else in the body is working on shifting sand. Energy, mood, weight and hormones all sit on top of this one system.
Two Sides of One Pattern
Blood sugar dysregulation doesn’t look the same in everyone. It tends to lean one of two ways, and many people live somewhere in between.
When Blood Sugar Runs Low
When blood sugar drops too far or too fast, you feel it.
- Shaky, irritable or lightheaded when you go too long without eating
- “Hangry”
- Needing caffeine or sugar to get through the afternoon
- Feeling better right after a meal, then crashing a few hours later
- Waking in the night and struggling to fall back asleep
In the blood, I look first at two markers. Fasting glucose sits on the low side of the functional range. And LDH, an enzyme that isn’t usually thought of as a blood sugar marker, often runs low alongside it. When the two sit low together, it points toward a reactive low blood sugar pattern.
When Blood Sugar Runs High
The other side feels different.
- Tired, heavy or foggy after meals instead of energized
- Craving something sweet right after eating
- Hungry again soon after a full meal
- Weight settling around the middle
- Thirstier than usual, or needing to urinate more often
Underneath this is often insulin resistance. The cells stop listening well to insulin, so the body makes more of it to get the same job done.
In the blood, this pattern tends to show up across several markers at once:
- Fasting insulin runs high. This is often the earliest signal, and many standard panels don’t include it.
- Fasting glucose drifts toward the high end of the functional range.
- Hemoglobin A1c, a reflection of average blood sugar over the past few months, starts to climb.
- Triglycerides rise.
- HDL falls.
Pay attention to those last two. Triglycerides and HDL usually get read as cholesterol markers. Read together, they say a great deal about blood sugar. When triglycerides rise and HDL falls at the same time, it’s one of the clearest signs on the whole panel that insulin may be running high. (More on reading those markers in How to Read a Cholesterol Panel.)
The Rollercoaster
For many people, it’s both.
A meal heavy in sugar or refined carbohydrate spikes blood sugar. Insulin surges to bring it down, often too far. You crash, crave, and eat again. Up and down, all day.
You may even see both sides in the blood, such as a low glucose sitting next to high triglycerides.
That isn’t a contradiction.
It fits the pattern of a system that has lost its steadiness.
Why It Happens: Adaptation, Not Failure
Your body isn’t failing here. It’s adapting, working hard to keep you steady under the load it’s been given.
Part of that load is carbohydrate tolerance: how much carbohydrate, and what kind, your body can handle before blood sugar starts to swing.
That tolerance isn’t fixed, and it isn’t the same for everyone. It shifts with stress, sleep, activity, muscle mass and hormones. Two people can eat the same meal and respond in completely different ways.
Eat within your tolerance and blood sugar stays steady. Go past it again and again, and the system strains. Over time the tolerance can shrink, so it takes less and less to tip you over.
The other part of the load is the modern food environment. For most of human history, people ate real, whole foods: nourishing fats, meat and eggs, vegetables, food prepared at home. Over the past few generations that shifted toward packaged foods, refined flours and sugars, and eating all day long. We were told to fear fat and fill up on grains.
Our bodies weren’t built for that load. Blood sugar is often where it shows up first.
How It Cascades
Blood sugar swings don’t stay in one place.
- Your stress system. Every crash calls in the stress hormones to rescue blood sugar. Do that several times a day for years, and the stress system is always on duty.
- Your sex hormones. High insulin can push them out of balance. In women it can drive testosterone up and disrupt the cycle (When Insulin Becomes a Hormone Problem). In men it can push testosterone down.
- Inflammation. Repeated spikes strain tissues and feed low-grade inflammation.
- Your brain. When the fuel supply swings, so do focus, memory and mood. Brain fog, anxiety and irritability often trace back here.
- Your thyroid. Stress and inflammation can slow thyroid signaling and the conversion of T4 into active T3 (T4 to T3 Conversion). What looks like a thyroid problem is sometimes a blood sugar problem upstream.
- Your weight. Insulin is a storage hormone. When it stays high, the body holds on to fat, especially around the middle.
One pattern, many downstream effects.
The Order the Markers Change
This is the part that matters most.
Conventional care often follows a wait, watch and react model. Glucose is checked. It’s “normal.” Nothing happens until the numbers cross into a diagnosis.
But this pattern tends to unfold in an order:
- Insulin rises first, often for years while glucose still looks fine.
- Triglycerides climb and HDL falls.
- Fasting glucose drifts up.
- A1c follows.
- Only then does a standard lab flag anything.
Functional blood chemistry reads these markers against functional ranges, the ones I learned from my teachers, Dr. Datis Kharrazian and Apex Energetics, and reads them together instead of one at a time. That makes it possible to see the pattern early, upstream, where there is the most room to change course.
That’s the heart of The Pattern Is the Diagnosis. No single marker tells the story. The relationship between them does.
What Good Looks Like: Metabolic Flexibility
Good metabolic health isn’t just a normal glucose reading.
It’s metabolic flexibility: a body that burns both fuels well. Glucose after you eat. Your own stored fat between meals, overnight and during steady movement. It switches between them smoothly.
When you’re flexible, you can go several hours without eating and feel fine. No crash, no shakiness, no desperate cravings.
When you’re inflexible, you’re stuck burning sugar. High insulin keeps the door to your fat stores closed, so when blood sugar dips, the only option is to sound the alarm and demand more food. That’s the rollercoaster.
Flexibility can be trained back. (For more on the two fuel systems, see Why Is It Important to Burn Fat Instead of Sugar?)
How to Support It, in Order
Sequence matters more than any single change.
- Fuel adequately. Under-eating can look like healthy eating, and it tends to push blood sugar lower and stress hormones higher. Steadiness starts with enough.
- Build steady meals within your tolerance. Real food, with protein and nourishing fat at each meal and carbohydrate at the amount your body handles well. Fewer grazing windows, not more.
- Address sleep and stress load. Short sleep and chronic stress both lower carbohydrate tolerance. They are part of the blood sugar picture, not separate from it.
- Get nutrients from food first. Supplements have a place when testing confirms a specific deficiency. Not as a stack.
- Then look at gut and inflammation. Once blood sugar is steady, deeper repair has solid ground to build on.
If you take medication for blood sugar, any change stays with your prescriber.
Back to the System
Blood sugar dysregulation isn’t a character flaw or a willpower problem.
It’s a body adapting to the conditions it’s been given, and telling you so, in how you feel and in your blood, long before any diagnosis.
When we see the pattern upstream, we can meet it there.
Frequently Asked Questions
What are the signs of blood sugar dysregulation? On the low side: shakiness or irritability between meals, afternoon crashes, cravings, and night waking. On the high side: fatigue or fog after meals, sweet cravings after eating, hunger soon after a full meal, and weight around the middle. Many people have signs of both.
Can you have insulin resistance with normal blood sugar? Yes. Insulin often rises for years while fasting glucose stays in the normal range, because the body is making more insulin to keep glucose there. Fasting insulin, triglycerides and HDL can point toward the pattern before glucose changes.
What blood tests show blood sugar problems early? Fasting insulin is often the earliest signal. Triglycerides rising alongside HDL falling adds to the picture, followed by fasting glucose and A1c. Read together against functional ranges, they show more than any one marker alone.
Can low blood sugar happen without diabetes? Yes. Reactive low blood sugar, a drop a few hours after eating, is common in people without diabetes. In the blood it may show up as a low fasting glucose alongside a low LDH.
Why do I wake up at 3 a.m.? There are several possible reasons. One common one is blood sugar dipping overnight: stress hormones are released to bring it back up, and that can wake you, wired, in the early hours.
Want to know what your own blood is saying? The Case Review reads your blood chemistry as patterns across systems, blood sugar first, and gives you a written Report of Findings and a one-on-one consult to set your priorities.
