Fasting insulin
The earliest and most sensitive marker.
You exercise. You eat well. You’re not even close to overweight. And yet your weight keeps creeping up around your middle. Your energy crashes after meals. You’re hungry an hour after eating. Your annual labs come back called “normal.”
Or maybe your labs aren’t fully normal. Your fasting glucose is climbing. Your A1c crept above 5.7. Your doctor said “let’s keep an eye on it” or wrote you a metformin prescription with little context.
Insulin resistance is the most common, most under-tested, and most under-treated metabolic pattern in adults. The earlier we identify and address it, the faster it resolves.
Standard labs measure fasting glucose and HbA1c. Both are downstream signals. By the time they’re abnormal, insulin resistance has been progressing for years.
The actual early marker is fasting insulin. Most doctors don’t run it. When they do, they often read it against a “normal” range that includes very sick people. Optimal fasting insulin is below 7. The “normal” range goes up to 24.
Catching insulin resistance at the early stage is the difference between a 90-day correction and a 10-year management problem.
A complete metabolic picture requires more than a fasting glucose number.
For some clients we add a continuous glucose monitor (CGM) for two weeks to see real-life patterns that fasting labs can’t show.
The earliest and most sensitive marker.
Standard panel plus average blood sugar markers.
The triglycerides and HDL ratio is the most useful insulin resistance signal in routine labs. Particle size adds detail.
hs-CRP, homocysteine. Insulin resistance runs with inflammation.
Insulin resistance drives androgen excess in women and low testosterone in men. SHBG is suppressed.
A slow thyroid worsens insulin resistance and vice versa.
Chronic cortisol elevation drives insulin resistance directly.
GLP-1 medications are highly effective when used correctly, and we don’t pretend otherwise.
The right way to use them is alongside a metabolic plan that addresses the underlying drivers, not as a standalone weight loss tool you’ll have to take indefinitely. Most of our GLP-1 clients are working alongside the medication to rebuild their metabolism so they can taper the dose and eventually come off, with the gains intact.
The wrong way to use them is as a substitute for fixing the inputs. We see the rebound stories every month.
This isn’t an “eat less, move more” page. That advice has failed millions of people, including most of our clients before they came to us. Our approach is data-driven and root-cause focused.