Insulin moves glucose out of the blood and into cells. When cells stop responding well, the pancreas produces more of it. High circulating insulin drives fat storage, disrupts ovulation and loads the liver — which is why PCOS, fatty liver and stubborn weight so often appear together, years before blood sugar rises.
The mechanism in one paragraph
After a meal, glucose enters the blood and the pancreas releases insulin to move it into cells. If cells become less responsive to that signal, the pancreas compensates by releasing more. Blood glucose stays normal, so nothing shows up on a routine test — but insulin is now running high, and insulin does far more than manage glucose.
It instructs fat cells to store and discourages them from releasing. It raises androgen production in the ovary. It pushes the liver to make fat. Each of those is a different clinical presentation of one underlying process.
Is this what is happening to you?The two-minute check further down asks four questions and shows the result immediately. No email, no call.
Take the 2-minute checkWhy it is missed for years
A fasting glucose test looks at the outcome, not the effort required to achieve it. Someone can hold a perfectly normal glucose for a decade because their pancreas is working progressively harder. Diagnosis usually arrives when that compensation finally fails.
That decade is the part where change is most effective and least demanded.
- Weight that gathers around the middle rather than evenly
- A crash in the afternoon and a strong pull towards something sweet
- Dark velvety patches at the neck, underarms or knuckles
- Irregular cycles, acne or excess hair growth in women
- Raised liver enzymes or fatty liver on a routine scan
2-minute check
What is your risk of type 2 diabetes?
Four questions. No email required for the result.
Does a parent or sibling have diabetes?
Where do you carry weight?
How active is an ordinary day?
Any thirst, frequent urination or afternoon crashes?
A lower risk profile
Risk still rises with age, so an HbA1c every couple of years is sensible.
A moderate risk profile
This is the stage where change makes the most difference, because the process can still be slowed.
A higher risk profile
Not a diagnosis. An HbA1c and fasting glucose test is inexpensive and worth doing soon.
This check is an indication, not a diagnosis. It does not replace medical advice.
What actually improves it
Three things have consistent evidence behind them, and none of them is exotic.
- Muscle. Muscle is the largest disposal site for glucose, and resistance training improves sensitivity independently of weight change.
- Meal composition and order. Protein and fibre before carbohydrate measurably lowers the insulin response to the same meal.
- Sleep. A run of short nights reduces insulin sensitivity measurably. This is not a small effect and it is routinely ignored.
What to ask for
A fasting insulin alongside fasting glucose allows HOMA-IR to be calculated, which is a far earlier signal than glucose alone. HbA1c gives the three-month average. A lipid profile and liver enzymes complete the picture, because this process shows up in all three places.
None of these tests is expensive, and the information they give is most valuable precisely when everything still looks normal.
In short
Questions we are asked
Is insulin resistance the same as diabetes?
No. It is the process that precedes type 2 diabetes, often by many years. Blood glucose stays normal while the pancreas compensates. Diabetes is diagnosed when that compensation can no longer keep up.
Can it be improved?
Insulin sensitivity responds to muscle mass, meal composition, sleep and body composition. The extent varies between individuals, and anyone quoting you a fixed number is guessing.
Reading about it is the easy part.The assessment turns this into your own numbers — free, with a free first consultation, and no figure quoted that we cannot substantiate.
Start my free assessmentConditions this relates to
Recipes that put this into practice
Methi thepla with curd
The same thepla, with a flour blend and a partner that flatten the glucose rise.
See the recipe →Moong dal chilla
Thirteen grams of protein at breakfast, and the difference shows up at four in the afternoon.
See the recipe →Cinnamon and fenugreek water
Two minutes, modest real evidence, and an honest account of its limits.
See the recipe →Related reading
Why weight will not move when your thyroid is underactive
When effort stops producing a result, the problem is often not the effort.
Read →What actually changes in a PCOS diet
Not a list of forbidden foods — a set of changes to how meals are built.
Read →Eight numbers worth understanding on your blood report
Most reports get read for what is flagged. The useful information is often elsewhere.
Read →References
- Indian Council of Medical Research — guidelines for management of type 2 diabetes.
- International Diabetes Federation — Asia-Pacific risk criteria.
- [Further references to be completed by the medical review panel.]
This article is general health information, written by a clinical nutritionist and reviewed by a doctor. It is not a diagnosis and it does not replace advice from your own clinician. Never change prescribed medication on the basis of what you read here.