Is "insulin resistance" the same as "prediabetes"?

Insulin resistance is a physiological condition where cells respond less effectively to insulin. Prediabetes (NDH) is a lab category (HbA1c 42–47 mmol/mol or fasting glucose 5.5–6.9 mmol/L) often reflecting insulin resistance and indicating higher risk of type 2 diabetes.

Can insulin resistance be treated or reversed?

No — lifestyle change is first line. NICE and NHS recommend structured weight‑loss and activity programmes; metformin may be considered in selected people where lifestyle measures are not effective or possible. Discuss options with your GP.

What blood test values define prediabetes/NDH in the UK?

In the UK, NDH is defined by HbA1c 42–47 mmol/mol (6.0–6.4%) or fasting plasma glucose 5.5–6.9 mmol/L. Diabetes is diagnosed at HbA1c ≥48 mmol/mol.

How often should someone with NDH be reviewed?

You should be offered at least annual monitoring (HbA1c or fasting glucose), assessment of weight/BMI and referral to a structured lifestyle programme if eligible (for example the NHS Diabetes Prevention Programme).

Will my GP give me metformin automatically for insulin resistance?

Metformin can be considered for selected people with NDH (for example those with high BMI or progressive hyperglycaemia) but it is not automatic for everyone — NICE recommends a personalised decision.

Where do I get specialist care for severe insulin resistance?

Yes — for severe or unusual cases, tertiary services such as the National Severe Insulin Resistance Service at Cambridge provide specialist assessment and management. Your GP or local diabetes team can refer.

Insulin Resistance in the UK: NICE Guidelines Explained

Author: Feras Alayed

Published: August 8, 2026

Updated: September 26, 2026

Category: insulin-resistance

Reading Time: 10 minutes

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