Type 1 Diabetes
What is Type 1 Diabetes?
Type 1 diabetes is an autoimmune condition where your body attacks the cells in your pancreas that make insulin. Insulin is a hormone that helps sugar move from your blood into your cells for energy. Without enough insulin, sugar builds up in your bloodstream instead of fueling your body.
This condition usually starts in childhood or young adulthood, but it can develop at any age. Unlike type 2 diabetes, type 1 is not caused by lifestyle choices or being overweight. Your immune system mistakenly targets the beta cells in your pancreas, which are responsible for insulin production.
People with type 1 diabetes need insulin therapy for life because their bodies cannot make this essential hormone. Early detection and proper management help prevent serious complications like heart disease, kidney damage, and nerve problems. Understanding your blood sugar patterns through regular testing is key to living well with this condition.
Symptoms
- Extreme thirst and drinking more fluids than usual
- Urinating more frequently, especially at night
- Unexplained weight loss despite normal or increased eating
- Extreme hunger even after eating
- Feeling very tired or weak throughout the day
- Blurry vision or difficulty focusing
- Slow healing cuts or bruises
- Tingling or numbness in hands or feet
- Dry, itchy skin
- Frequent infections, especially yeast infections
- Fruity-smelling breath
- Nausea or vomiting
Symptoms of type 1 diabetes often appear suddenly over a few weeks. Some people develop a life-threatening condition called diabetic ketoacidosis, which requires immediate medical attention. If you notice several of these symptoms together, seek medical care right away.
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Causes and risk factors
Type 1 diabetes happens when your immune system mistakenly destroys the insulin-producing beta cells in your pancreas. Scientists believe this autoimmune response is triggered by a combination of genetic factors and environmental triggers. Certain genes related to immune function, particularly HLA genes, make some people more susceptible. However, having these genes does not mean you will definitely develop the condition.
Environmental factors may include viral infections, early childhood diet, or other exposures that trigger the immune response in genetically predisposed people. Unlike type 2 diabetes, lifestyle factors like diet and exercise do not cause type 1 diabetes. Family history increases your risk, but most people with type 1 diabetes have no family history of the condition. The autoimmune attack can happen at any age, though it most commonly appears in children and young adults.
How it's diagnosed
Type 1 diabetes is diagnosed through blood tests that measure your blood sugar levels and insulin production. Hemoglobin A1C shows your average blood sugar over the past 2 to 3 months. High levels indicate poor blood sugar control. Fasting blood sugar tests and random blood sugar tests help confirm the diagnosis when levels are elevated.
Additional tests measure C-peptide and insulin levels to determine how much insulin your pancreas is producing. In type 1 diabetes, these levels are typically low or absent. Antibody tests can detect autoimmune markers like pancreatic exocrine cell antibodies and tissue transglutaminase antibodies. HLA genetic testing identifies gene variants associated with increased risk. Rite Aid offers testing for type 1 diabetes markers through our preventive health panel at Quest Diagnostics locations nationwide.
Treatment options
- Insulin therapy through injections or an insulin pump, tailored to your body's needs
- Regular blood sugar monitoring several times per day to guide insulin doses
- Carbohydrate counting to match insulin doses with food intake
- Eating balanced meals with consistent timing to maintain stable blood sugar
- Regular physical activity to improve insulin sensitivity and overall health
- Maintaining a healthy weight through nutrition and movement
- Managing stress through relaxation techniques and adequate sleep
- Regular checkups with your healthcare team including an endocrinologist
- Eye exams, kidney function tests, and foot exams to catch complications early
- Continuous glucose monitors to track blood sugar trends in real time
- Education on recognizing and treating low blood sugar episodes
- Vaccinations to prevent infections that can affect blood sugar control
Concerned about Type 1 Diabetes? Get tested at Rite Aid.
- Simple blood draw at your nearest lab
- Results in days, not weeks
- Share results with your doctor
Frequently asked questions
Type 1 diabetes is an autoimmune condition where your body destroys insulin-producing cells in your pancreas. Type 2 diabetes happens when your body becomes resistant to insulin or does not make enough of it. Type 1 usually starts in childhood or young adulthood and always requires insulin therapy. Type 2 often develops later in life and may be managed with lifestyle changes and oral medications before insulin is needed.
Currently, there is no proven way to prevent type 1 diabetes because it is an autoimmune condition. Unlike type 2 diabetes, lifestyle factors like diet and exercise do not cause type 1. Research is ongoing to find ways to stop or delay the immune system attack in people at high genetic risk. Early detection through antibody testing may help identify people who could benefit from future preventive treatments.
Most people with type 1 diabetes need to check their blood sugar at least 4 to 6 times per day. This includes before meals, before bed, and sometimes during the night. You may need to test more often during illness, exercise, or when adjusting insulin doses. Continuous glucose monitors can track your blood sugar automatically throughout the day and night.
For most adults with type 1 diabetes, an A1C below 7 percent is the target goal. This reflects an average blood sugar of about 154 milligrams per deciliter. Your healthcare provider may set a different target based on your age, health history, and risk of low blood sugar. Children and older adults may have higher A1C targets to reduce the risk of dangerous low blood sugar episodes.
C-peptide is a substance made when your pancreas produces insulin. A C-peptide test measures how much insulin your body is making on its own. In type 1 diabetes, C-peptide levels are typically low or absent because the immune system has destroyed most insulin-producing cells. This test helps doctors confirm whether you have type 1 or type 2 diabetes.
Yes, people with type 1 diabetes can live full, active lives with proper management. This includes taking insulin as prescribed, monitoring blood sugar regularly, and eating a balanced diet. Many athletes, professionals, and parents thrive with type 1 diabetes. Advances in insulin therapy and glucose monitoring have made management easier and more precise than ever before.
Uncontrolled type 1 diabetes can lead to damage in your eyes, kidneys, nerves, and blood vessels over time. High blood sugar damages small blood vessels, which can cause vision problems, kidney disease, and nerve pain. It also increases your risk of heart disease and stroke. Maintaining blood sugar in your target range through careful management greatly reduces these risks.
HLA genes play a role in immune system function and certain HLA variants increase your risk of developing type 1 diabetes. HLA testing can identify people at higher genetic risk, which is useful for family members of people with type 1 diabetes. However, having high-risk genes does not mean you will definitely develop the condition. This testing is often used in research studies and for screening family members.
Low blood sugar, or hypoglycemia, happens when your blood sugar falls below 70 milligrams per deciliter. Eat or drink 15 grams of fast-acting carbohydrates like glucose tablets, juice, or regular soda right away. Recheck your blood sugar after 15 minutes and repeat if it is still low. Once your blood sugar returns to normal, eat a small snack with protein to keep it stable.
Women with type 1 diabetes can have healthy pregnancies with careful planning and management. Blood sugar control before and during pregnancy is critical to reduce risks to both mother and baby. You will need more frequent monitoring and insulin dose adjustments throughout pregnancy. Working closely with your healthcare team, including an endocrinologist and high-risk pregnancy specialist, helps ensure the best outcomes.