Diabetes

What is diabetes?

Diabetes, referred to in medical terms as diabetes mellitus, is a long-term health condition that impacts the way the body manages blood glucose (blood sugar). Glucose serves as a vital energy source for the body's cells and is obtained primarily from the foods we consume.

A hormone known as insulin, which is produced by the pancreas, assists glucose in moving from the bloodstream into cells. When the body fails to produce sufficient insulin or is unable to use it effectively, glucose accumulates in the blood. Over time, consistently elevated blood sugar can impact various organs and disrupt normal bodily functions.

How Does Diabetes Develop?

Following a meal, the digestive system breaks carbohydrates down into glucose, which then enters the bloodstream. The pancreas releases insulin to help the body utilize or store this glucose for energy.

In individuals with diabetes, this process does not function correctly. The pancreas may produce inadequate insulin, or the body's cells may respond poorly to the hormone. As a result, blood glucose levels increase beyond the norma

Definition terms of diabetes

What is prediabetes?

Prediabetes is a condition in which blood sugar levels are elevated beyond the normal range but remain below the threshold required for a type 2 diabetes diagnosis. It occurs when the body starts to struggle with managing glucose efficiently, frequently because its cells no longer respond properly to insulin. This condition is also referred to as insulin resistance.

Prediabetes serves as a significant warning signal since it raises the likelihood of developing type 2 diabetes. Nevertheless, with prompt action and healthy lifestyle adjustments, many individuals can lower this risk.

What is glucose?

Glucose is a basic sugar that acts as one of the body's primary energy sources. It is obtained mainly from the carbohydrates we consume, such as rice, bread, fruits, potatoes, and other foods. Once digestion takes place, glucose moves into the bloodstream and is carried to various parts of the body to sustain vital functions.

The brain, muscles, and other organs depend on a steady energy supply to function correctly.

How does glucose work in the body?

When you consume foods that contain carbohydrates, your digestive system converts them into glucose. This sugar enters the bloodstream and becomes accessible to the body's cells.

A hormone known as insulin assists glucose in moving from the blood into cells, where it can be used for energy. Any surplus glucose can be stored for later use. This mechanism helps keep energy available at a steady level throughout the day.

What are normal blood glucose levels?

Blood glucose levels naturally fluctuate before and after meals. For most non-pregnant adults without diabetes, a normal fasting blood glucose level is approximately 70–99 mg/dL.

A reading below 70 mg/dL is generally regarded as low blood glucose, while a fasting reading of 126 mg/dL or higher falls within the diabetes diagnostic range and typically requires confirmation.

Why is glucose important?

Glucose supplies energy for daily activities, supports brain function, and helps muscles perform during exercise. Keeping blood glucose levels within the appropriate range is vital for overall health.

What is insulin?

Insulin is a hormone that the beta cells of the pancreas produce. It is vital for controlling blood glucose (blood sugar) levels and assisting the body in converting food into energy. Once you eat, carbohydrates are broken down into glucose, which then enters the bloodstream. Insulin facilitates the movement of glucose from the blood into cells, where it is either used for energy or stored for later use.

How does insulin function?

When blood glucose levels increase following a meal, the pancreas secretes insulin. This hormone prompts muscle and fat cells to absorb glucose and signals the liver to store glucose in the form of glycogen. Together, these effects help return blood sugar levels to the normal range.

Insulin also affects how the body stores fat and utilizes protein, which makes it important for overall metabolism.

Why is insulin essential?

In the absence of adequate insulin or an effective response to it, glucose can build up in the bloodstream. Over time, continuously high blood sugar can harm organs and blood vessels.

The body requires insulin to keep glucose regulation healthy. Individuals whose bodies are unable to produce sufficient insulin may need insulin medication prescribed by a healthcare professional.

What occurs when insulin does not function properly?

Insulin-related issues can arise when the pancreas produces too little insulin or when the body's cells become resistant to its effects. Such problems can disrupt glucose regulation and may result in diabetes.

Pancreas: 

The pancreas is an organ in the body that makes insulin. 

Insulin is a hormone that helps regulate blood sugar levels.  

The pancreas is a gland located behind the stomach that plays a crucial role in digestion ,

and blood sugar regulation by producing enzymes and hormones like insulin.

Glycemic Index(GI): 

The glycemic index (GI) measures how quickly a food raises blood sugar levels after eating. 

Foods with a high GI cause blood sugar to rise quickly, while low-GI foods lead to a slower, more stable rise. 

GI can help manage blood sugar levels and avoid spikes. 

Choosing low-GI foods, like whole grains and vegetables, can support better blood sugar control and reduce the risk of complications.

High blood sugar levels:

When a large amount of glucose comes from carbohydrates to the insulin.

Then it will release this glucose into the cells and sugar level will increase in the blood . 

It's called high blood sugar levels.                           

Low blood sugar levels:

When a small amount of glucose comes from carbohydrates to the insulin.

Then it will release this glucose into the cells and sugar level will decrease in the blood . 

It's called low blood sugar levels.