Diabetes mellitus, commonly referred to as diabetes, is a group of metabolic disorders characterized by high blood sugar levels over a prolonged period. Insulin, a hormone produced by the pancreas, acts like a key that lets glucose from food enter body cells to produce energy. In diabetics, either the pancreas doesn't produce sufficient insulin, or the cells fail to respond to the insulin produced.
Key Symptoms Include: Frequent urination (polyuria), increased thirst (polydipsia), and increased appetite (polyphagia).
Long-term Complications: If uncontrolled, chronic high blood glucose can damage microvasculature, leading to cardiovascular disease, stroke, chronic kidney disease, neuropathic foot ulcers, and diabetic retinopathy (vision damage).
Understanding the specific classification of your condition is crucial for planning the correct clinical intervention.
Type 1 diabetes results from the autoimmune destruction of insulin-producing beta cells in the pancreas, leading to an absolute deficiency of insulin. It commonly presents in children and young adults, though it can occur at any age. Individuals with Type 1 diabetes require daily insulin administration to survive.
The most common form, accounting for ~90% of cases. It begins with insulin resistance—where body cells fail to respond to insulin properly. Obesity, physical inactivity, and genetic predisposition are leading factors. Management includes tailored diabetic diets, physical exercise, oral anti-diabetic medications, and sometimes insulin.
Maturity Onset Diabetes of the Young (MODY) is a rare form caused by a single gene mutation. It is typically diagnosed in adolescence or early adulthood. Since it is monogenic, it is often misdiagnosed as Type 1 or Type 2. Correct genetic identification is vital as some forms do not require active insulin treatment.
Often termed Type 1.5, LADA is a slow-progressing autoimmune form of diabetes diagnosed in adults. It is frequently misdiagnosed as Type 2 initially. However, there is a gradual destruction of pancreatic beta cells, and patients eventually require insulin therapy within months or a few years.
This occurs in individuals diagnosed with Type 1 diabetes who also exhibit features of insulin resistance (such as abdominal obesity, high triglycerides, and low HDL). These patients are at higher risk for early cardiovascular and microvascular complications, necessitating strict lifestyle monitoring.
GDM is characterized by high blood glucose levels that develop during the second or third trimester of pregnancy in women who did not have diabetes previously. It usually resolves after childbirth, but increases the mother's and child's risk of developing Type 2 diabetes in the future.