Diabetes Mellitus

Diabetes mellitus is a chronic metabolic disorder in which the body is unable to properly regulate blood glucose (blood sugar) levels. This happens due to problems with insulin, a hormone produced by the pancreas that allows glucose to enter cells and be used for energy.
When insulin is not produced, not enough, or not used effectively, glucose builds up in the bloodstream, leading to hyperglycemia (high blood sugar). Over time, uncontrolled diabetes can damage multiple organs and systems in the body.

Main Types

·         Type 1 Diabetes – Autoimmune destruction of insulin-producing cells

·         Type 2 Diabetes – Insulin resistance and relative insulin deficiency

·         Gestational Diabetes – Occurs during pregnancy

·         Other specific types – Genetic defects, drug-induced, pancreatic disease

Causes Of Diabetes Mellitus

Type 1 Diabetes
  Autoimmune destruction of pancreatic beta cells
  Genetic susceptibility
  Possible viral or environmental triggers

Type 2 Diabetes
  Insulin resistance
  Progressive loss of insulin secretion
  Strongly linked to lifestyle and genetics

Gestational Diabetes
  Hormonal changes during pregnancy causing insulin resistance

Risk Factors

Non-Modifiable

• Family history of diabetes

• Age (risk increases after 35–40 years)

• Ethnicity (higher risk in African, Hispanic, South Asian populations)

• Genetic predisposition

Modifiable

• Overweight and obesity

• Physical inactivity

• Unhealthy diet

• High blood pressure

• High cholesterol

• History of gestational diabetes

Symptoms

Common Symptoms

• Frequent urination (polyuria)

• Excessive thirst (polydipsia)

• Increased hunger (polyphagia)

• Fatigue

• Unintended weight loss

• Blurred vision

Advanced or Severe Symptoms

• Slow-healing wounds

• Recurrent infections

• Tingling or numbness in hands and feet

• Erectile dysfunction

• Darkened skin folds (acanthosis nigricans)

Note: Type 2 diabetes may be asymptomatic for years.

Diagnosis
Laboratory Tests

• Fasting Plasma Glucose (FPG) ≥ 126 mg/dL

• HbA1c ≥ 6.5%

• Oral Glucose Tolerance Test (OGTT) ≥ 200 mg/dL

• Random Blood Glucose ≥ 200 mg/dL with symptoms

Additional Tests

• Urine glucose and ketones

• C-peptide levels

• Autoantibody testing (Type 1)

Treatment Options
Treatment depends on:

• Type of diabetes

• Age and overall health

• Severity and complications

Goals of Treatment

• Maintain normal blood glucose levels

• Prevent complications

• Improve quality of life

Medical Treatment
Type 1 Diabetes

• Lifelong insulin therapy

• Insulin injections or insulin pump

• Continuous glucose monitoring

Type 2 Diabetes
Oral antidiabetic medications:

• • Metformin

  • Sulfonylureas

  • DPP-4 inhibitors

  • SGLT2 inhibitors

Injectable therapies:

• • GLP-1 receptor agonists

  • Insulin (if needed)

Gestational Diabetes

• Diet and exercise

• Insulin if glucose remains uncontrolled

Lifestyle Change
Lifestyle modification is the foundation of diabetes management.

Diet

• Balanced meals with controlled carbohydrates

• High fiber intake

• Limit refined sugars and processed foods

• Portion control

Physical Activity

• At least 150 minutes/week of moderate exercise

• Strength training twice weekly

Weight Management
  Even 5–10% weight loss can significantly improve control

Home / Supportive Care

• Regular blood glucose monitoring

• Foot care and daily inspection

• Proper wound care

• Stress management

• Adequate sleep

• Diabetes education and counseling

Prevention

Type 1 Diabetes
  Currently not preventable

Type 2 Diabetes

• Maintain healthy weight

• Balanced diet

• Regular physical activity

• Avoid smoking

• Routine screening in high-risk individuals

Gestational Diabetes

• Healthy pregnancy weight

• Prenatal monitoring

Prognosis / Long-Term Outlook
With proper management, individuals with diabetes can live long, healthy lives.

Poorly Controlled Diabetes May Lead To

• Cardiovascular disease

• Kidney failure

• Neuropathy

• Retinopathy and blindness

• Diabetic foot ulcers and amputations

Early diagnosis and consistent care greatly improve outcomes.

When to See a Doctor

• Persistent symptoms of high blood sugar

• Recurrent infections

• Poor wound healing

• Episodes of hypoglycemia or hyperglycemia

• Pregnancy with risk factors

• Difficulty controlling blood sugar

FAQs

Is diabetes curable?
No, but it is highly manageable.

Can diabetes be reversed?
Type 2 diabetes can go into remission with significant lifestyle changes, especially early.

Is insulin a last resort?
No. Insulin is a necessary and life-saving therapy for many patients.

Can people with diabetes eat sugar?
Yes, in moderation and as part of a balanced diet.

Consistency in care, monitoring, and lifestyle choices builds trust in treatment and ease in daily life—the cornerstone of effective diabetes management.