Doctor's Assessment Included
Every result includes a professional assessment from a BIG-registered doctor. For treatment decisions, discuss your results with your GP.
Insulin (Fasting)
Fasting insulin provides insight into metabolic efficiency and fuel utilisation during exercise. Athletes benefit from understanding their insulin sensitivity for optimal energy management.
What It Measures
This test measures baseline insulin levels in a fasting state. Elevated fasting insulin often precedes elevated fasting glucose, making it an early indicator of metabolic dysfunction.
Why It Matters
Fasting insulin can detect insulin resistance years before diabetes develops. Early detection allows for lifestyle interventions that may prevent progression. Consult your healthcare provider for personalised advice.
When to Test
Testing may be recommended if you have risk factors for metabolic syndrome, PCOS, family history of diabetes, or unexplained weight gain, especially around the midsection.
Symptoms
Low Levels
Very low fasting insulin may indicate type 1 diabetes or advanced pancreatic insufficiency. Symptoms may include weight loss, excessive thirst, and frequent urination.
High Levels
Elevated fasting insulin may be associated with insulin resistance, weight gain, fatigue, sugar cravings, and difficulty losing weight. It is a key early marker of metabolic dysfunction.
Lifestyle Tips
Regular exercise, especially resistance training and aerobic activity, can improve insulin sensitivity. Reduce refined carbohydrates, prioritise protein and fibre, and maintain a healthy weight.
Frequently Asked Questions
What is insulin resistance?
Insulin resistance occurs when cells respond less effectively to insulin, causing the pancreas to produce more. It is an early stage of metabolic dysfunction that can lead to type 2 diabetes.
Can exercise lower fasting insulin?
Yes, regular physical activity, particularly resistance and aerobic exercise, can improve insulin sensitivity and lower fasting insulin levels over time.
Is fasting insulin better than fasting glucose for early detection?
Fasting insulin often rises before glucose does, making it potentially more sensitive for early detection of metabolic issues. Your healthcare provider can advise which tests are most appropriate.