Type 1 diabetes is an autoimmune disease that occurs when the body’s immune system attacks and destroys the insulin-producing beta cells in the pancreas. Without insulin, glucose builds up in the bloodstream instead of being used for energy. Type 1 diabetes is often referred to as juvenile diabetes because it frequently develops in childhood or adolescence, though it can develop at any age.
Type 1 diabetes accounts for approximately 5-10% of all diagnosed cases of diabetes. While type 2 diabetes is primarily attributed to obesity and physical inactivity, type 1 diabetes is not currently preventable and its exact causes are still uncertain. Genetics play a major role but are not fully determinative. Type 1 diabetes is believed to be caused by both genetic and environmental factors that trigger the immune system to destroy beta cells.
Having a family member with type 1 diabetes can increase someone’s risk of developing the condition themselves. It is estimated that 6-45% of people with type 1 diabetes have a first-degree relative, such as a parent or sibling, who also has the disease. Identical twins of people with type 1 diabetes are not always both affected, suggesting that environmental factors are also important. Potential environmental triggers that may contribute to beta cell destruction include certain viral infections, gut bacteria composition changes, diet, and more – but causes are still not fully elucidated.
The key symptoms of type 1 diabetes include increased thirst, increased urination, constant hunger due to body cells not absorbing glucose, weight loss despite eating more food, blurred vision, fatigue, irritability, and mood/behavioral changes. The onset of symptoms is often sudden and dramatic compared to type 2 diabetes. If left untreated, diabetic ketoacidosis (DKA) can develop which is a life-threatening complication of diabetes in which dangerous levels of ketones and blood acids build up when there is not enough insulin. Common symptoms of DKA include nausea, vomiting, abdominal pain, fruity smelling breath, shortness of breath and confusion.
Because type 1 diabetes results in little to no insulin production, those diagnosed require lifelong insulin replacement therapy through multiple daily injections or an insulin pump. Insulin enables glucose to enter cells and be used for energy, preventing dangerously high blood sugar levels. It is crucial for survival, and not taking it as prescribed can lead to ketoacidosis or even death. Blood sugar monitoring with a glucometer multiple times per day is also typically required to ensure proper insulin dosing and adjustments based on carbohydrate intake, illness, stress, etc.
While type 1 diabetes cannot currently be prevented, many aspects of managing the condition can help reduce risks of associated complications. Maintaining tight control of blood sugar levels as close to normal ranges as safely possible can help prevent or delay damage over time to eyes, kidneys, nerves and blood vessels. This includes careful attention to carbohydrate counting, glucose monitoring, insulin adjustments, exercise and more. Keeping cholesterol, blood pressure, weight and smoking status in healthy ranges also lessens long term risks.
Some of the most serious and costly long term complications of diabetes include eye disease, kidney disease, nerve damage, heart disease, stroke and blood vessel disease. High blood sugar levels over many years increase the risk. Diabetic retinopathy occurs when damaged blood vessels leak fluid or bleed into the retina. It is the leading cause of adult-onset blindness but can often be prevented with tight blood sugar control and regular dilated eye exams. Nerve damage, known as diabetic neuropathy, affects the feet and legs and can impair feeling and increase wound infection risk. Kidney damage or nephropathy may lead to renal failure or dialysis. Heart disease and stroke are responsible for approximately 65% of deaths in people with diabetes.
While type 1 diabetes is a lifelong condition requiring vigilant self-management, individuals with access to insulin and quality healthcare can live active, healthy and fulfilling lives comparable to those without the disease. With care and diligence, the risks of diabetic complications can often be reduced significantly. Finding strong social and emotional support systems, addressing mental health needs alongside physical care, and advocacy for diabetes rights, research and affordable access to supplies plays a key role in quality of life and well-being. Ongoing advancements in insulin therapies, glucose monitoring technologies, artificial pancreas devices, and research toward prevention and a cure remain reasons for continued hope.
Type 1 diabetes can present challenges but does not define an individual or limit their potential. Achieving stable blood sugars as much as possible through multidisciplinary care sets the stage for personal and professional success. Educating the public on the differences between type 1 and type 2 diabetes is also key for empowering those affected, reducing stigma and improving overall societal understanding of this condition. With ongoing diligence, support and proper medical management, people with type 1 diabetes can live happy and fulfilling lives. Continued research gives hope that in the future, a cure may eliminate the disease altogether.