New Delhi, 15 May 2025: Type 1 diabetes is often associated with children and teenagers, but growing evidence shows that this autoimmune condition can also begin in adulthood—and it may carry even greater risks than previously thought. A recent study has revealed that adults diagnosed with Type 1 diabetes face a significantly increased risk of developing cardiovascular disease and experiencing early death compared to those without diabetes or those diagnosed in childhood.
What Is Adult-Onset Type 1 Diabetes?
Type 1 diabetes occurs when the body’s immune system mistakenly attacks and destroys insulin-producing cells in the pancreas. Unlike Type 2 diabetes, which is often linked to lifestyle factors such as obesity and inactivity, Type 1 is an autoimmune disorder. While most cases are diagnosed in childhood or adolescence, a surprising number of people develop Type 1 diabetes in their 20s, 30s, or even later in life. This is known as adult-onset or latent autoimmune diabetes in adults (LADA), and it can sometimes be misdiagnosed as Type 2 due to its age of onset.
What the New Study Reveals
The new study, published in a prestigious medical journal, tracked thousands of patients with Type 1 diabetes over several years. Researchers found that those diagnosed in adulthood had a substantially higher risk of cardiovascular disease—including heart attacks, strokes, and heart failure—compared to people diagnosed at a younger age. In addition, these individuals faced a greater risk of premature death, even after controlling for other health and lifestyle factors.
The study suggests that late diagnosis, combined with a potential delay in starting insulin therapy and misclassification as Type 2 diabetes, may result in poorer glucose control and increased complications. This highlights the importance of accurate diagnosis and early, aggressive treatment in adults who develop diabetes symptoms.
Why Cardiovascular Risk Is So High
People with Type 1 diabetes already have a heightened risk of cardiovascular disease due to chronically high blood sugar levels, which damage blood vessels over time. In adults, this risk can be even more severe due to delayed diagnosis and existing age-related risk factors such as high cholesterol, high blood pressure, and reduced insulin sensitivity. Prolonged hyperglycemia can also trigger inflammation, stiffening arteries and accelerating the buildup of plaque, which leads to heart attacks and strokes.
Moreover, those diagnosed with adult-onset Type 1 diabetes may not receive the same level of intensive insulin management as younger patients, contributing further to long-term cardiovascular complications.
Symptoms to Watch Out For
Many adults are unaware they can develop Type 1 diabetes and may dismiss early symptoms as stress, aging, or poor lifestyle choices. Common signs include frequent urination, extreme thirst, unexplained weight loss, fatigue, blurry vision, and increased hunger. If you experience these symptoms, especially in combination, it’s important to consult a healthcare professional for proper testing, including antibody screening and blood glucose levels.
Managing the Risks
For adults with Type 1 diabetes, the key to reducing cardiovascular and mortality risk lies in tight blood sugar control, heart-healthy lifestyle choices, and regular health screenings. A balanced diet rich in whole grains, fruits, vegetables, lean proteins, and healthy fats is essential. Exercise is equally critical, not just for blood sugar management but also for strengthening the heart and improving circulation.
Doctors also recommend routine monitoring of blood pressure, cholesterol, and kidney function, along with the use of medications like statins and ACE inhibitors when necessary. Technology like continuous glucose monitors (CGMs) and insulin pumps can help adults better manage their glucose levels and avoid dangerous fluctuations.
Adult-onset Type 1 diabetes is a serious and often misunderstood condition that demands urgent attention. As the new study reveals, the risk of cardiovascular disease and early death is significantly elevated in adults diagnosed with Type 1 diabetes. Recognizing the symptoms early, receiving the correct diagnosis, and taking proactive steps to manage the condition can go a long way in reducing long-term health risks. If you or someone you know is experiencing unusual symptoms, don’t delay seeking medical advice—early intervention can be life-saving.
