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Type 1 Diabetes vs. Type 2 Diabetes: What's the Difference?

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Read the comparison below, or explore it visually. Create a visual lesson comparing type 1 diabetes and type 2 diabetes using available credits or plan allowance.

In type 1 diabetes the immune system destroys the insulin-making beta cells of the pancreas, so the body makes little or no insulin; in type 2 diabetes the body's cells respond poorly to insulin and the pancreas gradually cannot keep up. Both lead to high blood sugar, but type 2 is far more common, accounting for roughly nine in ten cases worldwide.

At a glance

Type 1 DiabetesType 2 Diabetes
CauseAutoimmune attack on pancreatic beta cellsInsulin resistance plus falling insulin output
Insulin madeLittle or noneSome, but not enough for the body's needs
Usual onsetOften childhood or young adulthoodUsually adults, increasingly younger people
Main risk factorsGenes and unknown triggers; not lifestyleExcess weight, inactivity, family history, age
ManagementAlways requires insulinLifestyle changes, tablets, sometimes insulin

Which should you use?

Type 1 Diabetes

Type 1 typically appears in a child or young adult with sudden thirst, frequent urination and weight loss, because the body has lost its ability to produce insulin.

Type 2 Diabetes

Type 2 typically develops slowly in adults, often found on a routine blood test, and is common in India, where many people develop it at a younger age and lower body weight.

Frequently asked questions

Can type 2 diabetes be prevented?
Its risk can often be reduced. Keeping a healthy weight, staying active and eating a balanced diet lower the chance of developing it, although genes and age also play a part. Type 1 cannot currently be prevented.
Can type 2 diabetes turn into type 1?
No. They are different diseases with different causes. However, some people with type 2 eventually need insulin because their pancreas produces less over time, which does not make it type 1.
What does insulin actually do?
Insulin is a hormone that lets cells take glucose from the blood to use for energy. Without enough working insulin, glucose stays in the blood and builds up, which over years can damage blood vessels, nerves, eyes and kidneys.