Insulin Resistance: What it is and Why It Matters
Feb 23, 2026
If you’ve been hearing the term insulin resistance tossed around but still feel fuzzy on what it actually means—pull up a chair. This first part of our series is all about breaking it down in plain English so you know exactly what’s going on in your body and why it matters for your health.
So, what is insulin?
Insulin is a hormone made by your pancreas. Its main job is to act like a key that unlocks your cells so glucose (a.k.a. sugar from the food you eat) can get inside and be used as energy.
When everything is working the way it should, insulin keeps your blood sugar stable and your energy steady.
What happens with insulin resistance?
When your body becomes resistant to insulin, that key doesn’t work as well anymore. It’s like trying to unlock your front door with a bent key—you jiggle, you push, you get frustrated. Eventually, your body has to make more and more insulin just to get glucose inside the cells.
The result? Glucose starts hanging out in your bl...
