1. The Biological Foundation: Anatomy & Hormones

• Alpha Cells: Specialist cells in the Islets of Langerhans (pancreas) that secrete Glucagon.

• Beta Cells: The primary cells in the pancreas responsible for producing Insulin. Their preservation is the ultimate goal of diabetes therapy.

• C-Peptide: A byproduct created when the body produces insulin. Measuring C-peptide is the most accurate way to determine how much natural insulin your pancreas is still making.

• Glucagon: A hormone that acts as the “anti-insulin.” It signals the liver to release stored glucose into the blood. It is also available as an emergency injection for severe hypoglycemia.

• Islets of Langerhans: Microscopic clusters of cells in the pancreas that function as the body’s “Command Center” for blood sugar regulation.

  

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• Pancreas: A 13cm-long gland located behind the stomach. It serves two functions: secreting digestive enzymes and producing blood-sugar-regulating hormones.

• Adrenalin (Epinephrine): The “Fight or Flight” hormone. It causes a rapid spike in blood glucose to provide immediate energy during stress or emergency.

2. Diagnostic Terms & Metrics

• A1C (Glycosylated Hemoglobin): A 3-month “weighted average” of your blood glucose. It measures the amount of sugar stuck to your red blood cells.

• BMI (Body Mass Index): A height-to-weight ratio.

  • Global Standard: Normal (18.5–24.9), Overweight (25–29.9), Obese (>30).

  • Indian/South Asian Standard: Overweight begins at 23.1, reflecting a higher risk for “thin-fat” metabolic syndrome at lower weights.

• Creatinine: A waste product from muscle breakdown. High levels in the blood indicate that the kidneys are not filtering effectively.

• mg/dL vs. mmol/L: Units for measuring blood glucose.

  • To convert mg/dL to mmol/L, divide by 18.

• OGTT (Oral Glucose Tolerance Test): The “Gold Standard” for diagnosing gestational diabetes; involves drinking a standardized sugar solution and measuring the body’s response over 2 hours.

• Post-Prandial: A clinical term meaning “after a meal.” Most post-prandial tests are done exactly 2 hours after eating.

3. The Diabetes Spectrum

• Type 1 Diabetes: An Autoimmune Disease where the body’s antibodies destroy its own beta cells, resulting in a total lack of insulin. Usually diagnosed in youth (formerly “Juvenile-Onset”).

• Type 2 Diabetes: A condition of Insulin Resistance and relative insulin deficiency. The body makes insulin, but the cells “ignore” it. (Formerly “Adult-Onset”).

• Gestational Diabetes: Glucose intolerance first recognized during pregnancy. While it usually resolves after birth, it is a significant “warning flight” for future Type 2 risk.

• Honeymoon Period: A temporary phase shortly after a Type 1 diagnosis where the remaining beta cells “wake up” and briefly produce enough insulin to significantly lower medication needs.

4. Complications & Pathology

• Arteriosclerosis: The hardening and narrowing of the arteries. In diabetes, high glucose acts like “sandpaper,” scarring the vessel walls.

• Cataracts: A clouding of the eye’s lens. High blood sugar can cause the lens to swell, accelerating cataract formation.

• Edema: Swelling caused by fluid trapped in the body’s tissues, often a sign of heart or kidney strain.

• Gangrene: Tissue death caused by a lack of blood supply (Ischemia) and subsequent infection.

• Ketones: Acidic byproducts of fat metabolism. When insulin is too low, the body burns fat too fast, creating a toxic buildup.

• Ketoacidosis (DKA): A life-threatening emergency where ketones turn the blood acidic. Requires immediate hospitalization.

• MASLD / MetALD: (Updated 2024 terms) Metabolic Dysfunction-Associated Steatotic Liver Disease. This replaces the term “Fatty Liver” and describes liver damage driven by diabetes and obesity.

• Neuropathy: Damage to the peripheral nerves, often starting as “pins and needles” or numbness in the feet.

• Retinopathy: Damage to the small blood vessels in the retina (back of the eye). It is the leading cause of preventable blindness.

5. Nutrition & Lifestyle

• Carbohydrate: The body’s primary fuel. Includes sugars (simple) and starches (complex). All carbohydrates eventually break down into glucose.

• Cholesterol: A waxy substance found in the blood. We focus on Non-HDL and LDL (bad) vs. HDL (good) to assess heart risk.

• Fibre: The indigestible part of plants. It acts as a “metabolic brake,” slowing the absorption of sugar and feeding the Microbiome.

• Trans Fats: Industrial oils (partially hydrogenated) that are highly inflammatory and should be eliminated entirely from the diet.

6. Specialized Professionals

• Endocrinologist: A specialist in the entire hormone system.

• Diabetologist: A doctor specifically focused on the 360-degree management of diabetes and its complications.

• Nephrologist: A kidney specialist.

• Ophthalmologist: A medical eye specialist (essential for annual dilated eye exams).

• Podiatrist / Chiropodist: A foot health specialist—critical for preventing amputations.

7. Medications & Technology

• Incretin Mimetics: The newest class of drugs (Ozempic, Mounjaro) that mimic gut hormones to improve insulin secretion, slow digestion, and signal the brain to reduce hunger.

• Insulin Pump: A device that delivers a continuous “basal” flow of insulin, mimicking a healthy pancreas.

• Oral Agents: Also known as OHAs (Oral Hypoglycemic Agents), these are pills that either help the pancreas release more insulin or help the cells use insulin better.

• Lipodystrophy: Lumps or small “craters” in the skin caused by injecting insulin into the exact same spot too many times.

Critical Closing Note:

All these terms represent different parts of your “Aircraft.” Understanding the terminology is the first step toward becoming a master Pilot of your own health.

Remember: If a term or a lab result is unclear, always ask for a briefing at P.G. Medical Center.