High Insulin (Fasting): what it means
A Insulin (Fasting) result above the normal range is considered high. Here is what a raised Insulin (Fasting) can point to, and when it is worth discussing with a doctor.
Reference range: Fasting 2–25 µU/mL; optimal <10 in metabolically healthy adults
Understand your full resultWhat a high Insulin (Fasting) can mean
- Insulin resistance — by far the most common cause; precedes type 2 diabetes by 5–10 years.
- Metabolic syndrome — central component.
- Obesity, sedentary lifestyle, high-refined-carb diet — the modifiable drivers.
- Polycystic ovary syndrome — insulin resistance is a defining feature.
- Cushing's syndrome, acromegaly — endocrine causes (rare).
- Insulinoma — very rare tumour producing insulin; presents with hypoglycaemia.
When to discuss with a doctor
Fasting insulin >10 µU/mL or HOMA-IR >2 suggests early insulin resistance and is a high-leverage intervention point: lifestyle change (low-refined-carb diet, weight loss, regular aerobic exercise, resistance training) is more effective at this stage than after glucose has risen. Pair with fasting glucose and HbA1c. Mediora.AI plots fasting insulin trajectory alongside the rest of the metabolic panel.
Conditions this can relate to
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One value is a snapshot. Upload the full test to see every marker explained together.
Upload your test - freeMediora.AI is informational - interpretation, not a diagnosis. A single out-of-range value is common and often benign; always discuss decisions with your doctor.