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Diabetes Mellitus: Type 2 and Gestational
Type 2 diabetes, characterized by insulin resistance, arises when the insulin receptors on cells lose responsiveness to insulin, diminishing the cell'…
In Type 2 or insulin-independent diabetes, the insulin receptors on the cells stop responding to insulin, developing resistance to insulin functions. This reduces the cell's ability to uptake glucose and, as a result, increases the blood glucose levels.
As shown in the table, blood sugar can be measured using different tests. Depending on the cut-off values, a patient is diagnosed as normal, prediabetic, or diabetic.
Type 2 diabetes is common in adults. Lack of physical activity, obesity, poor diet, and a family history are major risk factors.
Similar to Type 1, Type 2 diabetic patients are at risk of heart disease, amputations, kidney failure, and blindness.
Type 2 diabetes is managed through lifestyle changes like diet and exercise, along with medications such as oral antidiabetic drugs and, if needed, insulin therapy.
Gestational Diabetes Mellitus or GDM occurs during pregnancy and can lead to complications such as preterm labor, fetal overgrowth, and preeclampsia.
Although it resolves post-childbirth, GDM mothers and the babies born to them face a lifelong risk of developing Type 2 diabetes, cardiovascular diseases, and obesity.
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Q1: What causes insulin resistance in Type 2 diabetes?
In Type 2 diabetes, insulin receptors on cells stop responding to insulin, developing insulin resistance. This reduces the cell's ability to uptake glucose, causing blood glucose levels to rise. Unlike Type 1 diabetes where the pancreas fails to produce insulin, Type 2 involves a loss of cellular responsiveness to the hormone that is still being produced.
Q2: How are Type 2 diabetes diagnoses determined from blood glucose tests?
Blood glucose tests measure glucose levels to classify patients as normal, prediabetic, or diabetic based on cut-off values. Different tests provide varying measurements of blood sugar concentration. Results falling outside normal ranges indicate prediabetes or diabetes depending on severity, guiding clinical diagnosis and treatment decisions.
Q3: What are the major risk factors for developing Type 2 diabetes?
Type 2 diabetes is common in adults and associated with lack of physical activity, obesity, poor diet, and family history. These modifiable and non-modifiable risk factors increase susceptibility to insulin resistance. Lifestyle interventions targeting diet and exercise can help reduce risk in predisposed individuals.
Q4: What serious complications can Type 2 diabetes cause?
Type 2 diabetic patients face risks of heart disease, amputations, kidney failure, and blindness. These complications result from prolonged hyperglycemia damaging blood vessels and nerves. Early diagnosis and comprehensive management through lifestyle modifications and medications are crucial for preventing these severe outcomes.
Q5: How is Type 2 diabetes managed?
Type 2 diabetes management combines lifestyle changes including diet and exercise with pharmacological interventions. Oral antidiabetic drugs are typically prescribed first, with insulin therapy added if needed. This multifaceted approach helps restore glucose homeostasis and reduces complication risk in affected patients.
Q6: What is gestational diabetes mellitus and what are its effects?
Gestational Diabetes Mellitus (GDM) occurs during pregnancy and can cause preterm labor, fetal overgrowth, and preeclampsia. Although GDM typically resolves after childbirth, both mothers and babies face lifelong risks of Type 2 diabetes, cardiovascular diseases, and obesity, requiring ongoing monitoring.
Q7: Why do gestational diabetes mothers and their babies have increased long-term health risks?
Mothers with GDM and their babies develop lifelong susceptibility to Type 2 diabetes, cardiovascular diseases, and obesity despite GDM resolution post-childbirth. This suggests shared metabolic predisposition and potential developmental factors. Early intervention and lifestyle management are essential for mitigating these persistent health risks.