What causes type 2 diabetes?

Insulin helps move glucose from the bloodstream into cells for energy. In type 2 diabetes, cells respond less effectively to insulin, so the pancreas produces more to compensate. Over time, insulin production may not meet the body's needs and blood glucose stays elevated.

The process reflects several influences, including inherited tendency, excess body fat, low physical activity, sleep problems, age, and some medicines. Obesity, prediabetes, and metabolic syndrome are associated conditions, but type 2 diabetes can occur without any single obvious cause.

If you have risk factors or symptoms such as increased thirst, frequent urination, blurred vision, or unusual tiredness, arrange a blood glucose assessment. Prediabetes can be identified before diabetes and provides an opportunity to review eating patterns, activity, sleep, and weight with a clinician.

Do not change prescribed medicines without advice. A personalised plan may include food changes, regular movement, weight support, and medicine when needed. Follow-up testing shows whether the plan is controlling glucose and protecting health over time.

Seek urgent care for vomiting, severe weakness, confusion, deep or fast breathing, dehydration, or drowsiness with very high blood glucose. Arrange prompt assessment for new thirst and urination, unexplained weight loss, or recurrent infections, particularly during pregnancy or acute illness.

Ask: What tests confirm diabetes or prediabetes? Which factors may be affecting my glucose? What lifestyle change would help me most? Do I need a medicine review or regular monitoring?