Insulin Resistance Symptoms in Women: What "Normal" Labs Miss

By Easton Bryant, PharmD, Founder, North Century Pharmacy

"Everything Looks Fine." Except It Doesn't.

A woman booked a virtual consult with me recently. She was tired of being tired. Sluggish, inflamed, and in her words, feeling like someone else. She was also staring down a new reality: more medications, more specialists, and a separate doctor for every lab value that got flagged.

Here's what her numbers looked like:

• Fasting insulin: 19.7

• Fasting glucose: 96

• A1C: 6.0

• CRP: 10.8

• Uric acid: 7.0
  
  

That glucose of 96 is the part that matters. On most lab reports, it barely raises an eyebrow. But her body was producing nearly four times the insulin it should need just to hold her blood sugar there. Insulin resistance was in full swing, and her glucose looked calm only because her pancreas was working overtime to keep it that way.

Elevated triglycerides, fatty liver, insulin resistance, gut inflammation, high uric acid. These aren't five separate problems that need five separate doctors. They're one story. And if you only look downstream, treating each flagged number on its own, brace yourself for a long list of prescriptions.

The better question isn't "What can we throw at this?" It's "How did this happen?" Look upstream. That's where the answers live.

What Is Insulin Resistance?

Insulin resistance happens when your cells stop responding well to insulin, the hormone that moves sugar out of your bloodstream and into your cells for energy. Your pancreas compensates by making more and more insulin to keep blood sugar in range. For years, that works. Your glucose looks normal. But insulin stays high, and high insulin does damage of its own.

Here's how it builds. Anything that breaks down into sugar (pasta, bread, crackers, cookies, potatoes, rice, sweetened drinks) triggers insulin. The more starch and sugar coming in, the more insulin your pancreas has to produce to clear it. Excess sugar gets converted into triglycerides and stored as fat, including in the liver. And fat in the liver is one of the main drivers of insulin resistance.

It doesn't take much, either. A relatively small amount of fat in the liver is enough to start interfering with insulin signaling. And considering that most packaged foods on grocery shelves contain added sugar, it's not hard to see how we got here.

Make no mistake: insulin is the fat storage hormone. Chronically high insulin is linked to belly fat, muscle loss, inflammation, high blood pressure, poor cholesterol numbers, fatty liver, disrupted sex hormones, low mood, and memory problems. Over time, it raises the risk of type 2 diabetes, heart attack, stroke, dementia, and certain cancers. Alzheimer's has even picked up the nickname "type 3 diabetes" because of how closely it tracks with insulin resistance.

Why doctors often miss it

Most routine labs check fasting glucose and maybe A1C. Neither one flags insulin resistance until it's been building for a long time. Fasting insulin, the number that shows it early, is rarely ordered. It's not a character flaw on anyone's part. It's how the system is set up. But it means a lot of people get told "you're fine" while the problem grows. The CDC estimates that more than 8 in 10 adults with prediabetes don't know they have it.

Insulin Resistance Symptoms in Women

Insulin resistance affects everyone, but it shows up differently in women because it's tangled up with hormones. These are the patterns I see most often in consults:

Weight that won't move, especially around the middle

Stubborn weight gain, particularly belly fat, despite real effort. This is the number one frustration I hear, and it often gets worse after menopause.

Cravings and energy crashes

Intense sugar or carb cravings, feeling shaky or irritable between meals, and an afternoon crash. When insulin is high, your body has trouble reaching its stored energy, so it keeps asking for more.

Brain fog and fatigue

Constant tiredness even when you're "doing everything right," trouble focusing, and slipping word recall.

Skin clues

Skin tags, and darker, velvety patches of skin on the neck, armpits, or groin (called acanthosis nigricans).

Cycle changes, PMS, and PMDD

Irregular or missing periods, and PMS that feels like it's gotten worse. Here's something most people don't know: during the last two weeks of your cycle, your body becomes more sensitive to drops in blood sugar. If your blood sugar is already on a roller coaster, that's when you feel it most: cravings, mood swings, headaches, irritability. For women with severe PMS or PMDD, I want to see fasting glucose, fasting insulin, and A1C as part of the work-up, alongside thyroid and hormone testing.

PCOS

Polycystic ovary syndrome is the most common hormonal disorder in women of reproductive age, and roughly half of women with PCOS have insulin resistance. High insulin pushes the ovaries to make more testosterone, which drives many of the classic PCOS symptoms: acne, thinning scalp hair, extra body hair, irregular cycles, and difficulty getting pregnant. Women with PCOS also face a significantly higher risk of type 2 diabetes. More on what helps below.

The menopause shift

As estrogen declines, insulin sensitivity tends to decline with it, and fat storage shifts toward the belly. Many women in their 40s and 50s feel like the rules changed overnight. In a way, they did. Their metabolism needs a different playbook than it did at 30.

No single symptom proves anything. A pattern of them is worth investigating. And that's where the numbers come in.

How Do You Know If You Have Insulin Resistance? The 5 Numbers That Matter

Your lab report tells you what's "normal," meaning what's common in the population. But when most of the population is metabolically unhealthy, normal isn't the goal. Normal isn't the same as optimal.

These are the targets I use:

The trick if you don't have a fasting insulin number

Pull up your most recent lipid panel and divide your triglycerides by your HDL.

• Triglycerides of 125 and HDL of 40? That's a ratio of about 3.1. Not good.

• Triglycerides of 75 and HDL of 50? That's 1.5. Much better.
  

It's not a perfect test, but it's free, and it's sitting in labs most people already have.

If you're prioritizing just one thing

If you're metabolically unhealthy and can only focus on one number, choose fasting glucose. High glucose is downstream of high insulin, which has usually been elevated for a while. But it's the cheapest and easiest marker to monitor, and when you bring it down, the others tend to fall in line.

If you want the full picture, ask your provider for a fasting insulin test alongside your standard panel. And because hormones and insulin are so intertwined in women, a Comprehensive Female Hormone Test Kit can fill in the rest of the story. Want someone to look at all of it together? Book a consult with me inside of NCPlus, our North Century Pharmacy app. 

Why Can't I Lose Weight With Insulin Resistance?

Because a calorie is not a calorie. What you eat matters more than how much you eat.

The "calories in, calories out" story is convenient for the food industry, because it makes weight entirely your fault. But when people cut calories while still eating a diet high in starch and sugar, they often stall. They stay hungry, and fat loss barely budges.

Here's why. Starch and especially sugar drive insulin, and insulin drives fat storage. When energy gets locked away in fat cells, out of the bloodstream where your body can easily use it, your brain thinks you need to eat. So you're hungry even though you're carrying plenty of stored energy. Obesity is starvation amidst plenty.

It also works the other way from how most people assume. You don't get fat and then get sick. Insulin resistance comes first. High insulin tells fat cells to keep storing, and they grow.

And high insulin doesn't act alone. It feeds a vicious cycle that involves your thyroid, elevated cortisol, leptin resistance (leptin is the hormone that tells you you're full), and a disrupted gut microbiome that can lead to leaky gut and body-wide inflammation. If cortisol is part of your picture, this breakdown of cortisol testing  explains what to look for. And if your thyroid is in question, see what to know about thyroid nodules.

The key to fat loss isn't eating less. It's bringing insulin down.

How to Reverse Insulin Resistance

Insulin resistance is often reversible, especially when it's caught early. I've helped several people turn prediabetes around. The order matters: lifestyle first, then targeted support.

1. Start by cleaning house

The simplest first step I recommend is a short reset. Removing sugar, refined carbs, and common inflammatory foods for a week gives your body a break and shows you how you actually feel without them. Our 7-DAY RESET is built for exactly this, and it's where I start most people.

From there, the long-term moves are boring and they work:

• Cut added sugar and refined starch, and watch for fructose and high fructose corn syrup in particular

• Build meals around protein, fiber, and whole foods (Fiber Lean Powder makes the fiber part easier)

• Stop eating about three hours before bed

• Limit alcohol

• Protect your sleep and manage stress, because elevated cortisol pushes blood sugar up
  
  

2. Take resistance training seriously

This one is non-negotiable. Muscle is where most of your blood sugar goes after a meal. The more muscle you have, the more places glucose has to go, and the less work insulin has to do.

As we age, we naturally lose muscle, a condition called sarcopenia, and it has huge implications for longevity. Women are hit especially hard around menopause. Lifting weights (or bands, or bodyweight) two to three times a week is one of the most powerful tools you have against insulin resistance. And it matters even more if you're losing weight quickly, because muscle tends to go along with the fat.

3. Then consider berberine

When I think insulin resistance, I think berberine. It's one of the most researched natural compounds for blood sugar, and it has been studied head to head with metformin, the most prescribed blood sugar medication on the market. It supports healthy glucose levels, insulin sensitivity, triglycerides, and liver health.

Our Berberine 5X uses dihydroberberine, a form your body absorbs more easily. If you want the deeper dive, I wrote a full breakdown on berberine here [LINK: Article 6, Berberine]. For support across the whole list (glucose, triglycerides, blood pressure, HDL, and waistline), the 7% Club Bundle is built around the markers above. The name comes from the estimated 7% of Americans who meet every marker of metabolic health.

If you have PCOS

PCOS needs a more personalized approach, and there's no one-size-fits-all answer. That said, a few things stand out:

• Inositol is one of my favorites. The myo-inositol form has been shown in studies to lower insulin and testosterone and support healthy ovulation. See our Inositol Complex.

• Berberine has been shown to support insulin sensitivity and fat metabolism in women with PCOS.

• The PCOS Support Bundle combines berberine and inositol and saves you some money.

• Diet and exercise do more than people expect. In some studies, weight loss alone helped a significant share of women with PCOS start ovulating again.
  

My advice in a nutshell: track your labs, clean up your diet, take exercise seriously, and don't try ten things at once. See what works, then invest strategically.

Who Should NOT Take Berberine

Berberine is pretty awesome in a lot of ways. But it isn't for everybody. Here are five people I recently told not to take it:

1. A pregnant woman. Berberine can cross the placenta and enter breast milk. If you're pregnant or breastfeeding, hold off.

2. A woman on a blood thinner. That combination is a no-go.
   

3. Children. 

4. Someone with autoimmune conditions on several medications. Berberine has plenty of research behind it, but it doesn't have the massive studies needed to map every drug interaction. When the medication list is long, it gets tricky.

5. If you're on any prescription medication, talk with your provider or pharmacist before adding berberine. That's exactly what we're here for.
   
   

What About Ozempic and Other GLP-1s?

GLP-1 medications like Ozempic can improve insulin sensitivity and blood sugar, and for some people they're the right tool. I'm not anti-GLP-1.

But handing out an injection without accountability isn't the best answer. It's an answer. It's just not the best one. Without changes to food, movement, and muscle, a meaningful share of the weight lost can come from muscle, and the underlying problem is still there when the medication stops.

If you're using a GLP-1, the same foundations apply: a food reset, strength training to protect your muscle, and labs to track what's actually changing. The medication works better when the basement fire is being put out at the same time.

Can North Century Pharmacy help me figure out if I have insulin resistance?

Yes. Easton Bryant, PharmD, offers one-on-one consults to review your labs together, including fasting insulin, glucose, triglycerides, and hormones, and map out a plan. The 7-DAY RESET is the simplest place to start, and NCPlus members get ongoing coaching and support.

Look Upstream

A long list of flagged labs, a growing list of medications, and a different specialist for each one. That's the path a lot of women are on. It doesn't have to be yours.

Insulin resistance is one of the most common upstream causes behind the problems people get treated for separately. Find it early, address it with the boring basics that never change, and add targeted support where it makes sense.

Where to start:

• Clean house: Begin with the 7-DAY RESET.

• Support your numbers: Add Berberine 5X, or the PCOS Support Bundle if PCOS is part of your story.

• Get the full picture: Get REFOCUS30 and run your labs and review them together in our app, or explore UNLOCK genetic testing

• Do it with support: Join NCPlus for community, coaching, and our 90-day REFOCUS30 labs and masterclass. 

Here's to more clarity, confidence, and hope.

Easton

These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease. This article is for educational purposes and is not a substitute for individualized medical advice.