How to Talk to Your Doctor About Suspected Insulin Resistance
Key Takeaways
- Bring specific symptoms and patterns to your appointment — not just a general feeling that “something’s off.”
- Standard bloodwork often misses early insulin resistance. Know which tests to ask for.
- A fasting insulin test is rarely ordered automatically — most doctors won’t run it unless you ask.
- You can advocate for yourself firmly without being confrontational. Specific language helps.
There’s a particular kind of exhaustion that comes from knowing something is wrong and not being able to get anyone to take it seriously.
You’ve gained weight around your middle despite barely changing your diet. You feel sluggish after meals that should be fine. Your energy crashes mid-afternoon like clockwork. You mention it at your annual checkup and the numbers come back “normal.” You leave with nothing.
For a lot of women in their 40s and 50s, insulin resistance sits in this frustrating gap — symptomatic enough to affect daily life, but not yet showing up clearly on a basic blood panel. The standard fasting glucose test simply isn’t sensitive enough to catch it early.[1]
That’s not your doctor failing you — it’s a genuine limitation of the most commonly ordered tests. But it does mean you sometimes have to advocate more specifically for what you need.
Insulin Resistance and Your Doctor: Step 1 — Track Your Symptoms First
Walking in and saying “I think I might have insulin resistance” will land very differently than walking in with a specific, documented pattern of symptoms. Doctors respond to information. The more concrete you can be, the more useful the conversation becomes.
Before your appointment, spend a few days noticing and writing down the following:
Symptoms to Track Before Your Appointment
- Energy crashes, especially 1–2 hours after meals
- Strong carbohydrate or sugar cravings, particularly in the afternoon
- Difficulty losing weight despite controlled eating
- Weight gain concentrated around the abdomen
- Skin changes: dark patches on neck, armpits, or groin (acanthosis nigricans — a known visual marker of insulin resistance)[2]
- Brain fog or difficulty concentrating after meals
- Fatigue that isn’t explained by sleep quality alone
- Irregular periods or worsening PMS (particularly relevant during perimenopause)[3]
The goal isn’t to self-diagnose. It’s to give your doctor enough specific information to work with — instead of a vague complaint that’s easy to attribute to stress, age, or lifestyle.
Insulin Resistance Tests: Step 2 — Know What to Ask For
This is where a lot of people get stuck. Standard bloodwork at a routine checkup typically includes fasting glucose and HbA1c. Both are useful — but neither will catch insulin resistance in its early stages.
During that window, your body is compensating by producing more insulin to keep glucose normal. Everything looks fine on paper. You feel anything but fine.[1]
| Test | What It Shows | Typically Ordered? |
|---|---|---|
| Fasting glucose | Blood sugar after overnight fast. Misses early insulin resistance when insulin is still compensating. | Standard |
| HbA1c | 3-month average blood sugar. Better than fasting glucose alone, but still misses early insulin resistance. | Standard |
| Fasting insulin | Directly measures insulin levels. Elevated fasting insulin is often the earliest marker of insulin resistance — before glucose rises.[4] | Ask for it |
| HOMA-IR | Calculated from fasting glucose and fasting insulin. One of the most reliable early indicators of insulin resistance.[5] | Ask for it |
| Triglycerides + HDL | High triglycerides and low HDL is a classic metabolic signature. A ratio above 3:1 may be a meaningful signal.[6] | Standard |
| 2-hour glucose tolerance test | Shows how your body handles a glucose load over time. More sensitive than fasting glucose alone. | Sometimes |
The most important test most people never get: fasting insulin. Your glucose can be completely normal while your insulin is running two or three times higher than it should be — your body is working overtime to keep things in range.
That’s early insulin resistance, and it won’t show up on a standard panel.
Step 3 — What to Actually Say to Your Doctor About Insulin Resistance
Knowing what you want to ask for is half the battle. The other half is saying it in a way that invites collaboration rather than defensiveness. Here’s a simple way to frame the conversation:
Example — How to open the conversation
You“I’ve been tracking some symptoms over the past few weeks that I wanted to bring up. I’m noticing significant energy crashes after meals, strong carbohydrate cravings in the afternoon, and I’ve been gaining weight around my middle despite not really changing what I eat. I’ve been reading about insulin resistance and wondering if that might be worth looking into.”
If they suggest it’s probably just stress or hormones“That might be part of it — but would it be possible to also run a fasting insulin alongside the standard panel, just to rule it out? I’d feel a lot better having the data.”
If they say your last bloodwork was fine“I understand the glucose and HbA1c looked normal. My concern is that insulin levels can be elevated before glucose rises — would a fasting insulin test make sense to add?”
You’re not trying to diagnose yourself. You’re trying to get enough information to understand what’s happening in your body. That’s not overstepping — that’s exactly what appointments are for.
Step 4 — Reading Your Insulin Resistance Results
If your fasting insulin comes back elevated — generally above 10 µIU/mL, though some clinicians consider above 7 µIU/mL a signal worth addressing — that’s meaningful information, even if your glucose is still normal.[4]
It means your body is working harder than it should to manage blood sugar. That’s a window to act before things progress.
If your doctor isn’t concerned but you are, it’s completely reasonable to ask for a referral to an endocrinologist, or to seek a second opinion. You know your body.
A normal test result is genuinely reassuring — but a test that wasn’t run can’t reassure anyone.
And if everything does come back clearly normal? That’s useful information too. It means the symptoms you’re experiencing have a different explanation — and that’s worth investigating just as much.[7]
Frequently Asked Questions
How do I talk to my doctor about insulin resistance?
The most effective approach is to arrive with documented symptoms rather than a general concern. Track energy crashes after meals, carbohydrate cravings, unexplained weight gain around the abdomen, and any skin changes for a week before your appointment. Then ask specifically for a fasting insulin test alongside standard bloodwork — most doctors won’t order it automatically. Framing your request as wanting to “rule it out” tends to invite collaboration rather than resistance.
What tests should I ask my doctor for if I suspect insulin resistance?
Beyond the standard fasting glucose and HbA1c, ask specifically for a fasting insulin test and request that your HOMA-IR score be calculated from the results. A full lipid panel — particularly your triglyceride-to-HDL ratio — is also worth reviewing, as a ratio above 3:1 may signal underlying metabolic dysfunction. These tests are not exotic; they are simply not included in most routine panels unless specifically requested.
Can fasting glucose be normal and insulin resistance still be present?
Yes — this is one of the most important things to understand. In early insulin resistance, the body compensates by producing more insulin to keep blood sugar within the normal range. Glucose looks fine on paper while insulin levels may already be significantly elevated. This is why fasting glucose alone is considered an insensitive early marker, and why fasting insulin and HOMA-IR provide a more complete picture.
What is a normal fasting insulin level?
Reference ranges vary by lab, but fasting insulin is generally considered within range below 10 µIU/mL. Some clinicians working in metabolic health consider values above 7 µIU/mL worth discussing, particularly in the presence of symptoms. A result in the “normal” range does not automatically rule out early insulin resistance — context, symptoms, and the HOMA-IR calculation all matter. Discuss your specific results with a qualified healthcare provider.
Medical Disclaimer: The information provided in this article is for educational purposes only and does not constitute medical advice. Always consult a qualified healthcare provider before making changes to your diet, lifestyle, or treatment plan. TheMetabolicHub.com does not replace professional medical guidance.
References
- Tabák AG, et al. Prediabetes: a high-risk state for diabetes development. Lancet. 2012.
PMID: 22677866 - Hermanns-Lê T, et al. Acanthosis nigricans associated with insulin resistance. Am J Clin Dermatol. 2004.
PMID: 15554731 - Mauvais-Jarvis F, et al. The role of estrogens in control of energy balance and glucose homeostasis. Endocr Rev. 2013.
PMID: 23460719 - Rhee EJ, et al. Fasting serum insulin predicts the development of type 2 diabetes in middle-aged adults. Diabetes Metab J. 2011.
PMID: 22111043 - Gayoso-Diz P, et al. Insulin resistance (HOMA-IR) cut-off values and the metabolic syndrome in a general adult population. Eur J Nutr. 2013.
PMID: 22460087 - McLaughlin T, et al. Use of metabolic markers to identify overweight individuals who are insulin resistant. Ann Intern Med. 2003.
PMID: 12965973 - Knowler WC, et al. Reduction in the incidence of type 2 diabetes with lifestyle intervention or metformin. N Engl J Med. 2002.
PMID: 11832527
