Diabetes is a chronic medical condition that occurs when the body is unable to properly regulate blood sugar (glucose) levels. Glucose is the body’s primary source of energy, and insulin, a hormone produced by the pancreas, helps move glucose from the bloodstream into cells to be used for energy. Diabetes develops when the body either doesn’t produce enough insulin, cannot use it effectively, or both.
There are three main types of diabetes:
1. Type 1 Diabetes
- Cause: An autoimmune condition where the immune system mistakenly attacks insulin-producing beta cells in the pancreas, leading to little or no insulin production.
- Effect: People with type 1 diabetes must take insulin injections or use an insulin pump to regulate blood sugar.
2. Type 2 Diabetes
- Cause: Often linked to insulin resistance, where the body’s cells don’t respond well to insulin, combined with a gradual decrease in insulin production. It is commonly associated with obesity, physical inactivity, and genetic factors.
- Effect: Blood sugar levels remain elevated, which can cause damage over time.
3. Gestational Diabetes
- Cause: Develops during pregnancy when hormonal changes make the body less sensitive to insulin. It usually resolves after childbirth but increases the risk of developing type 2 diabetes later in life.
- Effect: Can affect the baby’s health if not managed.
How Diabetes Affects the Body
High blood sugar (hyperglycaemia), the hallmark of diabetes, can cause both immediate and long-term complications:
Short-Term Effects:
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- Fatigue, excessive thirst (polydipsia), frequent urination (polyuria), and unintentional weight loss (especially in type 1 diabetes).
- High blood sugar can lead to diabetic ketoacidosis (DKA) in type 1 diabetes, a life-threatening condition caused by the breakdown of fat for energy, producing harmful ketones.
Long-Term Complications:
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- Cardiovascular Disease: High glucose levels damage blood vessels, increasing the risk of heart attack, stroke, and hypertension.
- Neuropathy: Damage to nerves, especially in the hands and feet, leading to tingling, numbness, or pain.
- Retinopathy: Damage to the blood vessels in the retina, which can cause vision loss or blindness.
- Kidney Disease (Nephropathy): Chronic high glucose levels can impair kidney function, leading to kidney failure.
- Wound Healing: Impaired blood flow and nerve damage slow healing, especially in the feet, increasing the risk of infections and amputations.
- Oral Health Issues: Increased risk of gum disease and infections.
Management and Prevention
While diabetes cannot be cured, it can be managed effectively:
- Type 1 Diabetes: Requires insulin therapy, a balanced diet, and regular blood sugar monitoring.
- Type 2 Diabetes: Lifestyle changes like healthy eating, exercise, weight loss, and sometimes medication (e.g., metformin or insulin).
- Gestational Diabetes: Managed through diet, exercise, and occasionally insulin.
Early detection and management are critical to preventing complications and maintaining a good quality of life.
