Blood Sugar: When "Normal" Doesn't Always Mean Optimal

There was a time when I thought blood sugar was something only people with diabetes needed to worry about.

If my fasting glucose came back "normal," I assumed everything was working exactly as it should.

Case closed.

In fact, when my own fasting glucose came back at 86 mg/dL, I remember feeling reassured. It was comfortably within the laboratory's normal reference range. I folded the lab report, checked that box in my mind, and moved on.

There was nothing to worry about...

...or so I thought.

Months later, after spending more time learning about metabolism, hormones, and the incredible ways our bodies regulate energy, I found myself asking a completely different question.

Was my blood sugar healthy simply because my glucose was normal?

Or...

Was there more to the story?

That single question completely changed how I think about blood sugar.

It also reminded me of something I've learned over and over again throughout my own health journey.

Our bodies are wonderfully complex.

Rarely does one number tell the whole story.

Just as I learned through my experiences with chronic inflammation, undiagnosed celiac disease, poor sleep, and eventually understanding the role those pieces played in my overall health, I realized blood sugar deserved the same curiosity.

Sometimes what appears "normal" on paper isn't the entire picture.

Sometimes our bodies are working incredibly hard behind the scenes to keep those numbers looking normal.

Blood Sugar Isn't the Enemy

Carbohydrates often receive a bad reputation.

Sugar is blamed for nearly everything.

Low-carb diets become the answer to every problem.

But glucose itself isn't bad.

In fact, glucose is essential.

Your brain depends on it.

Your muscles depend on it.

Every cell in your body relies on glucose to produce energy.

Without it, we couldn't think clearly, walk across the room, laugh with our families, or even keep our hearts beating.

The goal isn't to eliminate glucose.

The goal is helping our bodies regulate it efficiently.

That's an important distinction.

Your Body Is Constantly Performing a Miracle

Have you ever stopped to think about what happens after you eat?

Probably not.

Most of us simply enjoy our meal and move on with our day.

Meanwhile...

Your digestive system begins breaking food into nutrients.

Carbohydrates become glucose.

That glucose enters your bloodstream.

Within minutes, your pancreas notices the increase and releases insulin.

I like to think of insulin as a key.

Its job is to unlock the doors to your cells, allowing glucose to leave the bloodstream and enter the places where it can be used for energy or stored for later.

When everything is working well, it's a beautifully coordinated system.

Your body performs this balancing act thousands of times each year without you ever noticing.

It's remarkable.

Until it slowly becomes less efficient.

When "Normal" Doesn't Tell the Whole Story

This was one of the biggest mindset shifts for me.

For years, I believed laboratory reference ranges represented optimal health.

The more I learned, the more I realized they answer a very specific question.

Most conventional laboratory reference ranges are designed to identify disease or significant abnormalities. They're developed using large populations and are incredibly valuable for helping clinicians recognize when something has moved well outside what is expected.

In other words, they're often asking:

"Is disease likely present?"

Functional and integrative practitioners frequently approach laboratory results from a different perspective.

Rather than asking only whether disease is present, they often ask:

"Is the body functioning as optimally as it could?"

Because of that, functional medicine often uses narrower "optimal" ranges that are intended to identify subtle physiological changes before disease develops. These optimal ranges are based on clinical philosophy and experience and are not universally standardized or accepted across all areas of medicine.

I don't see these two approaches as competing with one another.

I see them as answering different questions.

One helps identify disease.

The other attempts to identify opportunities for improvement.

Both have value.

The Story Behind the Number

Imagine two people sitting in the same exam room.

Both receive the exact same fasting glucose result.

92 mg/dL.

On paper...

They're identical.

But now let's look a little deeper.

Person A

• Fasting glucose: 92

• Low fasting insulin

• Stable energy throughout the day

• Rarely experiences cravings

• Exercises regularly

• Healthy waist circumference

• Sleeps well

Person B

• Fasting glucose: 92

• Elevated fasting insulin

• Feels hungry every two hours

• Crashes every afternoon

• Carries excess weight around the abdomen

• Wakes feeling tired

• Constantly craves sweets

The glucose number is exactly the same.

The metabolic picture couldn't be more different.

That realization fascinated me.

For years I had assumed blood sugar was simply the number printed on my lab report.

Now I was beginning to understand that glucose was only one chapter in a much larger story.

The next question naturally became...

If glucose is only one piece of the puzzle...what else should we be looking at?

One of the biggest surprises for me was discovering that blood sugar often isn't the first thing to change.

Insulin is.

Most of us have heard of insulin, but few of us understand just how remarkable it is.

Every time we eat carbohydrates, our pancreas releases insulin to help move glucose out of the bloodstream and into our cells where it can be used for energy.

When our cells are sensitive to insulin, this process happens beautifully.

The pancreas doesn't have to work very hard.

Blood sugar rises gently after a meal and then returns to baseline.

Energy remains relatively stable.

Life goes on.

But what happens when our cells begin responding less efficiently?

Meet Insulin Resistance

Imagine you're knocking on your neighbor's front door.

The first knock...

They answer immediately.

Now imagine knocking every hour...

Every day...

For years.

Eventually they may become slower to answer.

Maybe they don't hear you.

Maybe they simply stop responding.

Our cells behave in a similar way.

When they're repeatedly exposed to elevated insulin, they can gradually become less responsive to its signal.

This is called insulin resistance.

The pancreas notices.

Instead of giving up, it simply makes more insulin.

And more.

And more.

At first...

It works beautifully.

Blood sugar stays normal.

Your lab work still says everything looks great.

Meanwhile, behind the scenes, your pancreas is working overtime.

That realization completely changed how I looked at fasting glucose.

I realized blood sugar wasn't always telling me how healthy my metabolism was.

Sometimes it was telling me how hard my pancreas was working.

Why Fasting Insulin Matters

This is one of the reasons many functional and integrative practitioners like to include a fasting insulin level alongside fasting glucose.

Think about it this way.

Imagine two cars driving down the highway at exactly 60 miles per hour.

From the outside...

They look identical.

But one car is cruising effortlessly at 1,800 RPM.

The other has the engine screaming at 5,000 RPM just to maintain the same speed.

They're both moving at 60.

Only one is working much harder.

Blood sugar can be similar.

Two people can both have a fasting glucose of 90 mg/dL.

One may have a fasting insulin of 4 μIU/mL.

The other may have a fasting insulin of 18 μIU/mL.

The glucose looks identical.

The effort required to maintain it does not.

This is why fasting insulin can sometimes provide a glimpse into changes occurring years before glucose begins rising.

Blood Sugar Is About More Than Diabetes

One of the biggest misconceptions many people have is believing blood sugar only matters if diabetes is in the picture.

The truth is...

Blood sugar influences nearly every system in the body.

When glucose regulation becomes less efficient, people may notice things like:

• Afternoon energy crashes

• Brain fog

• Difficulty concentrating

• Feeling "hangry"

• Cravings for sweets

• Increased belly fat

• Poor sleep

• Mood changes

• Feeling shaky when meals are delayed

These symptoms don't automatically mean blood sugar is the problem.

But they may be clues worth paying attention to.

Just like inflammation...

Just like cholesterol...

Symptoms are often messages.

Five Questions to Ask Before Assuming Your Blood Sugar Is Fine

Rather than asking only,

"Is my glucose normal?"

Try asking these questions instead.

1. What is my fasting glucose?

It's an excellent starting point.

But remember...

It's only one piece of the story.

2. Have I ever checked my fasting insulin?

Pairing fasting glucose with fasting insulin can help us understand how hard the pancreas may be working to maintain that normal glucose level.

Sometimes insulin begins rising years before blood sugar does.

3. What is my Hemoglobin A1c?

A1c reflects your average blood sugar over approximately the previous three months.

It provides a much bigger picture than one fasting glucose value.

4. How do I actually feel after I eat?

This may be one of the most overlooked questions.

Do you feel energized?

Or do you become sleepy?

Do you feel satisfied for several hours?

Or are you searching the pantry again ninety minutes later?

Your body often tells you what's happening long before a lab report does.

5. Am I supporting healthy blood sugar every day?

One healthy meal won't transform your metabolism.

Neither will one dessert ruin it.

Our bodies respond to what we do consistently.

That should feel encouraging.

Because it means we have tremendous influence over our health.

Looking at the Whole Picture

One lesson that keeps resurfacing in my own journey is this:

Health is rarely about one number.

When I was struggling with undiagnosed celiac disease, I could have focused only on digestive symptoms.

Instead, I learned that my immune system, sleep, hormones, energy, and inflammation were all connected.

Blood sugar works the same way.

It's connected to:

• Sleep

• Stress

• Physical activity

• Muscle mass

• Nutrition

• Gut health

• Hormones

• Inflammation

None of these systems exist in isolation.

They are constantly talking to one another.

Which means when one system struggles...

Others often begin compensating.

That doesn't mean we should become anxious about every lab result.

Quite the opposite.

It means we should become curious.

Instead of asking,

"What's wrong with me?"

Perhaps we begin asking,

"What is my body trying to adapt to?"

That question changed everything for me.

And it naturally leads to the next question...

If our daily choices influence blood sugar so profoundly, where should we begin?

So where do we begin?

One of the things I love most about blood sugar is that supporting it doesn't require perfection.

You don't have to swear off birthday cake.

You don't have to eliminate every carbohydrate.

You don't have to count every gram of sugar for the rest of your life.

In fact, I've found that some of the most powerful changes are also the simplest.

Small habits.

Repeated consistently.

Those are the things that change the trajectory of our health.

Build Meals Instead of Snacks

One of the easiest ways to support stable blood sugar is to stop thinking about foods individually and start thinking about building balanced meals.

Our bodies digest different nutrients at different speeds.

Carbohydrates are broken down relatively quickly.

Protein takes longer.

Healthy fats slow digestion even further.

Fiber acts almost like nature's speed bump, slowing the absorption of glucose into the bloodstream.

When we combine these nutrients together, they create a much steadier release of energy.

Instead of a dramatic spike followed by an equally dramatic crash, our bodies receive a slower, more controlled supply of glucose.

That often translates into:

• More stable energy

• Better concentration

• Fewer cravings

• Longer-lasting fullness

• Less overeating later in the day

• Better blood sugar regulation

One of the simplest questions I ask myself now isn't,

"Is this healthy?"

It's...

"What's missing from this meal?"

Real-Life Examples

Let's take an apple.

An apple is nutritious.

It contains vitamins, antioxidants, and fiber.

But eating it by itself may still cause a quicker rise in blood sugar than if it were paired with protein and healthy fat.

Instead, try:

Apple + natural peanut butter or almond butter

The fiber from the apple combines with the healthy fat and protein from the nut butter to slow digestion and provide steadier energy.

Here are a few other simple combinations:

Instead of...

Banana

Try...

Banana with a handful of walnuts or almonds.

Instead of...

Crackers

Try...

Whole-grain or gluten-free crackers with hummus or cheese.

Instead of...

Toast

Try...

Whole-grain or gluten-free toast topped with avocado and eggs.

Instead of...

Greek yogurt alone

Try...

Greek yogurt topped with berries, chia seeds, and chopped pecans.

Instead of...

Carrot sticks

Try...

Carrots with hummus or guacamole.

Instead of...

Oatmeal

Try...

Oatmeal mixed with chia seeds, walnuts, cinnamon, and a scoop of Greek yogurt or protein powder.

Notice the pattern?

Each example combines fiber + protein + healthy fat.

That combination slows digestion, improves satiety, and helps prevent the rapid rise and fall in blood sugar that often leaves us searching for another snack an hour later.

Small changes like these are sustainable because they don't require eliminating foods you enjoy.

They simply help your body use those foods more effectively.

Move More Than You Think You Need To

Movement doesn't just burn calories.

It creates another place for glucose to go.

Our muscles are one of the largest users of glucose in the body.

When we move, those muscles become more insulin sensitive, meaning they need less insulin to absorb glucose from the bloodstream.

One of my favorite recommendations is also one of the easiest.

Go for a walk after dinner.

Even 10 to 15 minutes of walking can improve post-meal blood sugar regulation.

You don't have to train for a marathon.

Consistency beats intensity almost every time.

Protect Your Sleep

If you've read my previous blog on inflammation, you know how passionate I am about sleep.

Long before I understood my airway issues, I underestimated how profoundly poor sleep affects nearly every system in the body.

Blood sugar is no exception.

Even one night of inadequate sleep can temporarily reduce insulin sensitivity.

That's one reason people often notice stronger cravings after a poor night's sleep.

It's not a lack of willpower.

It's biology.

Sleep is one of the most underrated blood sugar tools we have.

Stress Changes Blood Sugar Too

Have you ever noticed your appetite changes during stressful seasons?

Maybe you crave sweets.

Maybe you lose your appetite entirely.

Stress hormones such as cortisol increase blood sugar because your brain believes you may need immediate access to energy.

That response is incredibly helpful if you're running from danger.

It's less helpful when the "danger" is traffic, deadlines, emails, or financial stress.

Learning to calm the nervous system doesn't just improve mental health.

It influences metabolic health as well.

Curiosity Over Fear

One thing I never want people to take away from articles like this is fear.

The goal isn't to make everyone worry about every lab value.

The goal is curiosity.

For years, I believed normal automatically meant healthy.

Today, I know health is far more nuanced.

One lab value rarely tells the entire story.

Instead of asking...

"Is my blood sugar normal?"

I now find myself asking...

"How well is my body managing the energy I'm giving it?"

That one question changes everything.

The Bigger Picture

As I've reflected on my own health journey, I keep coming back to the same realization.

First, it was inflammation.

I stopped asking how to eliminate inflammation and started asking what my body was trying to tell me.

Then it was cholesterol.

I stopped focusing on a single LDL number and began looking at the bigger metabolic picture.

Now it's blood sugar.

Not because my fasting glucose of 86 mg/dL was concerning.

Quite the opposite.

That number reminded me that good health isn't defined by one lab result.

It's defined by understanding how all of our body systems work together.

Every lab value is a clue.

Every symptom is information.

Every healthy habit is a vote for the future we're trying to create.

Looking back, my fasting glucose of 86 mg/dL wasn't remarkable because it was "perfect."

It was remarkable because it reminded me that health isn't defined by one number.

Every lab result is one piece of a much larger conversation.

When we stop asking,

"Is this normal?"

and begin asking,

"How well is my body functioning?"

we begin seeing health through a completely different lens.

Maybe that's the question worth asking more often.

Not...

"How do I fix this number?"

But...

"What is my body trying to tell me?"