What happens in the body to cause type 1 diabetes?

The immune system attacks the insulin-making beta cells in the pancreas.

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  1. The immune system attacks insulin-making cells ✔
  2. The pancreas makes too much insulin
  3. The liver stops storing sugar

Why: Type 1 is an autoimmune disease. The immune system mistakes the pancreas's beta cells for invaders and destroys them, so the body makes little or no insulin. Scientists still don't know what triggers it.

Huh, didn't know that: Insulin is the hormone that helps blood sugar move into your cells so it can be used for energy.

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References

Answer: The immune system attacks insulin-making cells. Type 1 is an autoimmune disease. The immune system mistakes the pancreas's beta cells for invaders and destroys them, so the body makes little or no insulin. Scientists still don't know what triggers it.

  1. ADA, Understanding Type 1 Diabetes diabetes.org/about-diabetes/type-1
    your immune system mistakenly treats the beta cells in your pancreas that create insulin as foreign invaders and destroys them
    Checked 2026-10-08.

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