Type 2 diabetes is what most people mean when they say "diabetes".
Nine out of ten diabetes cases worldwide are Type 2. It used to be called "adult-onset diabetes", but that name was retired because teenagers and even children now get it. The mechanism is the same regardless of age.
What actually happens in your body
Your body breaks food down into glucose — sugar that goes into your blood. To get that glucose out of the blood and into your cells where it can be used, you need a hormone called insulin. Your pancreas makes it.
In Type 2 diabetes, two things go wrong, slowly:
- Insulin resistance — your cells stop responding properly to insulin. The key still fits the lock, but the door is sticky.
- Beta cell fatigue — your pancreas tries to compensate by making more insulin, then eventually wears out and makes less.
Result: glucose stays in the blood instead of going into cells. Blood sugar rises. Over years, that high sugar damages blood vessels, nerves, kidneys, eyes, and the heart.
Who gets Type 2 diabetes
Major risk factors:
- Family history (genes are a huge factor)
- South Asian ancestry — we get diabetes at lower BMI than other populations
- Overweight, especially around the abdomen (waist > 90cm men, > 80cm women in South Asians)
- Sedentary lifestyle
- Diet heavy in refined carbs and sugar
- Age 45+ (but increasingly seen in 30s)
- High blood pressure or cholesterol
- Gestational diabetes during a previous pregnancy
Can it be reversed?
Type 2 can go into remission. That is the right word, not "cure". With significant weight loss, exercise, and dietary change — especially in the first 5 years after diagnosis — many people can get their HbA1c back into the normal range without medication. It is not guaranteed, and the disease can come back if old habits return.
Want to check your own risk? Ask DiaCare AI. The risk scanner is free.