Autoimmune condition

Life expectancy with type 1 diabetes

Type 1 diabetes is an autoimmune condition in which the body stops producing insulin. It usually begins earlier in life and requires lifelong insulin management.

Important. The figures below describe statistical associations across populations, drawn from published research. They are not a prediction about any individual. Outcomes vary widely between people in both directions, and many factors are modifiable. This is not medical advice. For personal guidance, speak to a GP.

What the research suggests

Historical cohort data, such as the Scottish registry analysis published in JAMA, associated type 1 diabetes with a reduction in life expectancy that was substantial in older datasets. Outcomes have improved considerably with modern insulin therapy, continuous glucose monitoring, and better cardiovascular care, so older figures likely overstate the gap for someone managing the condition well today.

What changes the outlook

Tight glucose control, cardiovascular risk management, and avoiding smoking are the strongest levers. Kidney health is an important factor in long-term outlook.

What helps

Estimate your own range

Answer around a dozen short questions and get a five-year age range based on your profile. It takes about two minutes.

Start the estimator

Common questions

Does type 1 diabetes reduce life expectancy?

Historical cohort data, such as the Scottish registry analysis published in JAMA, associated type 1 diabetes with a reduction in life expectancy that was substantial in older datasets. Outcomes have improved considerably with modern insulin therapy, continuous glucose monitoring, and better cardiovascular care, so older figures likely overstate the gap for someone managing the condition well today.

What improves the outlook with type 1 diabetes?

Tight glucose control, cardiovascular risk management, and avoiding smoking are the strongest levers. Kidney health is an important factor in long-term outlook.

Can I get a personal estimate?

This tool gives a statistical estimate as a five-year range based on your overall profile, including type 1 diabetes alongside your other answers. It is not a prediction. For personal medical guidance, speak to a GP or specialist.