Mortality risk factors in type 1 diabetes
Pro Research Analysisby 
Searched over 200M research papers
Key Mortality Risk Factors in Type 1 Diabetes
Research consistently shows that people with type 1 diabetes face a higher risk of early death compared to the general population, mainly due to cardiovascular disease and diabetes-related complications Corrales2023Eliasson2022Lee2019+5 MORE. Several studies have identified the most important risk factors that contribute to this increased mortality.
Glycemic Control and HbA1c Levels
Poor glycemic control, as measured by high HbA1c levels, is a strong predictor of mortality in type 1 diabetes. Lower HbA1c (<7%) is associated with reduced mortality, while higher levels increase the risk of death and cardiovascular events Corrales2023Rawshani2019Wei2025+1 MORE. Each 1% increase in HbA1c can raise the risk of death by about 22% .
Cardiovascular and Renal Complications
Cardiovascular disease (CVD), including heart failure and previous cardiovascular events, is a major cause of death in type 1 diabetes Corrales2023Eliasson2022Lee2019+5 MORE. Chronic kidney disease (CKD), especially when combined with albuminuria (protein in urine), further increases mortality risk. The presence of both CVD and CKD, or heart failure, leads to a markedly higher risk of premature death Eliasson2022Rawshani2019Putula2024.
Microvascular Complications
Microvascular complications such as retinopathy, macroalbuminuria, and neuropathy are strong markers for increased mortality. These complications often indicate more advanced or poorly controlled diabetes Soedamah-Muthu2008Corrales2023Rawshani2019+1 MORE.
Blood Pressure and Lipid Levels
High systolic blood pressure and elevated cholesterol, especially non-HDL and LDL cholesterol, are significant risk factors for mortality and cardiovascular outcomes in type 1 diabetes. Keeping systolic blood pressure below 140 mmHg and LDL cholesterol below 2.5 mmol/L is linked to lower risk Soedamah-Muthu2008Rawshani2019Putula2024.
Other Important Risk Factors
- Age and Duration of Diabetes: Older age and longer duration of diabetes increase mortality risk Soedamah-Muthu2008Eliasson2022Rawshani2019+1 MORE.
- Obesity and Waist-to-Hip Ratio: Higher waist-to-hip ratio and overweight/obesity are associated with higher mortality and cardiovascular events Soedamah-Muthu2008Wei2025.
- Smoking: Smoking is a key modifiable risk factor, accounting for a significant proportion of deaths and cardiovascular events .
- Triglycerides and Creatinine: High triglyceride levels and elevated plasma creatinine are linked to increased mortality .
- Mental Health and Foot Complications: Mental and behavioral disorders, as well as foot complications, also contribute to higher mortality .
Age at Onset and Gender Differences
Early-onset type 1 diabetes (diagnosed before age 10) is linked to the highest excess risk of death and cardiovascular disease, with women being particularly affected Rawshani2018Miller2016. Women with type 1 diabetes have a relatively higher risk of cardiovascular mortality compared to men .
Conclusion
Mortality in type 1 diabetes is driven by a combination of poor glycemic control, cardiovascular and renal complications, microvascular damage, high blood pressure, and abnormal lipid levels. Early-onset diabetes, smoking, and mental health issues further increase risk. Aggressive management of these risk factors, especially glycemic control, blood pressure, cholesterol, and kidney health, is essential to reduce premature death in people with type 1 diabetes Soedamah-Muthu2008Corrales2023Eliasson2022+7 MORE.
Sources and full results
Most relevant research papers on this topic
DOI