Diabetes Type 1, also called Type 1 Diabetes Mellitus (T1DM), is a chronic autoimmune disease where the immune system mistakenly attacks and destroys the insulin-producing beta cells in the pancreas. This results in little to no insulin production, leading to high blood sugar levels (hyperglycemia).
Causes & Risk Factors
- Autoimmune Reaction: The body's immune system mistakenly attacks and destroys its own pancreatic beta cells.
- Genetic Predisposition: Family history of Type 1 Diabetes or autoimmune conditions increases risk.
- Environmental Factors: Viral infections, dietary triggers, or environmental exposures may initiate the autoimmune cascade.
Symptoms
- Excessive Thirst (Polydipsia): Constant unquenchable thirst despite high fluid intake.
- Frequent Urination (Polyuria): Increased volume and frequency of urination, including night-time waking.
- Extreme Hunger (Polyphagia): Persistent hunger as body cells cannot utilize glucose without insulin.
- Unintentional Weight Loss: Rapid weight loss due to muscle and fat breakdown for energy.
- Fatigue and Weakness: Feeling constantly exhausted and physically weak.
- Blurred Vision: Fluid shifts in eye lenses caused by elevated blood glucose.
- Slow Healing of Wounds: Delayed wound healing and increased susceptibility to skin infections.
- Ketoacidosis (Severe Cases): Nausea, vomiting, abdominal pain, fruity-smelling breath, rapid breathing, and confusion.
Diagnosis & Clinical Thresholds
- Fasting Blood Sugar: ≥ 126 mg/dL (7.0 mmol/L)
- Random Blood Sugar: ≥ 200 mg/dL (11.1 mmol/L) accompanied by classic symptoms
- HbA1c Test: ≥ 6.5% glycated hemoglobin
- C-Peptide Test: Low or undetectable levels indicate little to no endogenous insulin production.
- Autoantibody Tests: Detects autoimmune markers such as GAD (Glutamic Acid Decarboxylase) antibodies, IA-2, and ZnT8 antibodies.
Treatment & Lifelong Management
- Lifelong Insulin Therapy: Basal (long-acting) and bolus (rapid-acting) insulin administered via daily injections or continuous insulin pumps.
- Blood Sugar Monitoring: Continuous Glucose Monitoring (CGM) or frequent daily fingerstick blood glucose tests.
- Healthy Diet: Carbohydrate counting, structured balanced meal plans, and low-glycemic index foods.
- Regular Physical Activity: Exercise helps manage blood sugar, but insulin dosing must be adjusted to prevent hypoglycemia.
- Lifestyle Management: Avoid smoking, manage psychological stress, and maintain a healthy weight.
Complications (If Unmanaged)
- Short-Term: Diabetic Ketoacidosis (DKA) – a life-threatening medical emergency requiring immediate ICU care.
- Long-Term: Peripheral neuropathy, diabetic retinopathy (vision loss), nephropathy (kidney disease), and accelerated cardiovascular disease.
Type 1 diabetes requires lifelong management, but with proper care and medical guidance, individuals can live active, healthy lives.
