Learn
Understanding Type 1 Diabetes
Clear, simple explanations for parents, teachers and health workers — no medical background needed.
What is Type 1 Diabetes?
Type 1 Diabetes (T1D) is an autoimmune condition. The body's immune system mistakenly destroys the beta cells in the pancreas that make insulin. Without insulin, glucose cannot enter the body's cells for energy and builds up in the blood. T1D is not caused by eating too much sugar, and it cannot be prevented or cured — but it can be managed well with daily insulin.
Type 1 vs Type 2
| Type 1 | Type 2 | |
|---|---|---|
| Cause | Autoimmune destruction of insulin-producing cells | Insulin resistance, often with lifestyle and genetic factors |
| Typical onset | Often childhood or adolescence; can occur at any age | More common in adults |
| Speed of symptoms | Days to weeks, often dramatic | Months to years, often silent |
| Treatment | Insulin is required for life | Lifestyle, oral medicines, sometimes insulin |
Common symptoms in children
Excessive thirst
Frequent urination
Unexplained weight loss
Fatigue and weakness
Vomiting or stomach pain
Rapid, deep breathing
If a child has these symptoms, ask for a blood glucose test the same day. It takes minutes.
What is DKA?
Diabetic ketoacidosis
Without insulin, the body burns fat for energy and produces acids called ketones. As ketones build up, the blood becomes dangerously acidic. DKA can cause dehydration, coma and death, and it is the most common reason a late-diagnosed child ends up in intensive care.
Emergency warning signs
- •Rapid, deep breathing
- •Fruity-smelling breath
- •Persistent vomiting
- •Severe stomach pain
- •Confusion or drowsiness
Go to an emergency department immediately.
How insulin works
1. Glucose enters the blood
Food is broken down into glucose, the body's main fuel.
2. Insulin unlocks the cells
Insulin acts like a key so glucose can enter muscle and other cells.
3. In T1D, the key is missing
Injected or pumped insulin replaces what the pancreas can no longer make.