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Diabetes mellitus is
a chronic metabolic disorder characterized by persistent hyperglycemia
resulting from impaired insulin secretion, insulin resistance, or both. In type
1 diabetes, the pancreas produces little or no insulin, often appearing in
childhood or adolescence. Type 2 diabetes, the most common form, occurs when
the body becomes resistant to insulin or doesn't produce enough, typically
developing in adults but increasingly seen in children.
Metabolic disorders
encompass abnormalities in glucose and lipid metabolism, with diabetes being a
leading cause. Chronic high blood sugar damages multiple organ systems,
causing microvascular complications like retinopathy, nephropathy, and
neuropathy, plus macrovascular issues, increasing cardiovascular disease risk by
2–4 times. Diabetes also contributes to non-alcoholic fatty liver disease, metabolic syndrome, dyslipidemia, and cardiomyopathies.
Metabolic syndrome clusters
high blood pressure, elevated blood sugar, excess abdominal fat, and
abnormal cholesterol, sharply raising heart disease and stroke risk. Over 830
million people worldwide have diabetes, with most in low- and middle-income
countries lacking treatment.
Effective management includes blood glucose control through diet, physical activity, and medication when needed, plus blood pressure and lipid management to reduce cardiovascular risk. Regular screening for eye, kidney, and foot damage enables early intervention, preventing disability and premature death. Type 2 diabetes and its complications can often be prevented through weight management and lifestyle changes.