In our OPD, I still see many patients saying “Doctor, Mai to meetha khata hi nahi, to mujhe Diabetes kaise ho sakta hai?”. It pains me to see so much ignorance about such a common disorder.
When most people think of diabetes, they think of only high blood sugar. But as a pathologist, I see blood glucose not as the main disease itself, but as a symptom of a deeper metabolic problem happening inside your body cells.
To understand how diabetes develops—and how to prevent or manage it—we need to look at how your body handles energy at the cellular level.
Glucose Metabolism: Key, Lock, and Energy
All food that you eat is converted to glucose (simple sugar) in your body and released into your blood. This glucose then enters into every cell to provide energy.
However, the doors for glucose entry into the cell are locked by default. To open this door it requires a key called Insulin. Insulin is a protein (hormone) produced by your pancreas.
When this lock-and-key system breaks down, glucose cannot enter your cells and accumulates in the bloodstream, leading to hyperglycemia (high blood sugar) or Diabetes Mellitus(DM).
Types of Diabetes Mellitus
While there are around 50 types and subtypes of diabetes, three are most common. To understand how diabetes develops, think of insulin as a key and your cell as a locked door.
1. Type 1 DM: The “Missing Key” Problem
Type 1 DM is a result of an autoimmune reaction, meaning your body mistakenly attacks and destroys its own insulin-producing pancreatic cells. So your body has little/no insulin. Without the key, glucose cannot enter the cells and remains in the bloodstream only.
2. Type 2 DM: The “Rusty Lock” Problem
Here, the cells become unresponsive to insulin (insulin resistance). Something like, the key is there but the lock is rusted and cannot be opened. Result? Glucose levels remain elevated in the blood.
To overcome this, the pancreas works double-time to make more insulin, until it eventually burns out.
3. Gestational (Pregnancy induced) Diabetes
During pregnancy , hormones produced by the placenta may lead to temporary insulin resistance and cause gestational diabetes.
Gestational Diabetes usually resolves after delivery, but increases the long-term risk of developing Type 2 diabetes for both mother and child.
The reality check :
India is the diabetic capital of the world.
According to International Diabetes Federation, India has around 90 million adults affected by diabetes and an estimated 136 million are prediabetics (at a higher risk of developing diabetes in near future).
The onset of diabetes among Indians is about a decade earlier than their western counterparts.
More than 50% of people are unaware of their diabetic status which leads to health complications if not detected and treated early.
The Pathologist’s Take: Catching It Early
Diabetes doesn’t happen overnight.
Though currently there is no prevention for Type 1 Diabetes, if found early, its symptoms and complications can be delayed.
Type 2 diabetes often develops quietly over 10 to 15 years before you see your routine fasting sugar reach “diabetic” range. But, it is highly manageable—and often reversible in early stages.
If you have risk factors (like family history, chronic inflammation, stress, physical inactivity, and excess abdominal fat), I advise getting checked for advanced markers like HbA1c, Fasting Insulin, C-peptide & Triglyceride-to-HDL ratio along with routine fasting sugar checkups.
With early screening, we can catch metabolic dysfunction early and intervene through targeted lifestyle modifications.
This educational article is brought to you by Sahare Healthcare. As a dedicated provider of comprehensive medical and diagnostic services through our hospital and pathology centers, we are committed to your family’s wellness. For any health concerns, expert consultations, or to book a lab test, please find the contact details of our facilities in the “Quick Links” below.