Diabetes mellitus is one of the most widespread chronic conditions in the world, yet nearly half of those living with it remain undiagnosed. According to the International Diabetes Federation (IDF), over 537 million adults worldwide have diabetes, and this number is projected to reach 783 million by 2045. Early detection and proper management are essential to preventing complications such as heart disease, kidney failure, and nerve damage.

Understanding diabetes—including its causes, symptoms, and treatment options—can empower you to take control of your health.

What Is Diabetes mellitus?

Diabetes mellitus is a condition in which the body cannot properly regulate blood sugar (glucose) levels due to insulin-related dysfunction. Insulin is a hormone that allows glucose to enter cells and be used for energy. In diabetes, the body either does not produce enough insulin or cannot use insulin effectively, leading to high blood sugar levels.

There are several types of diabetes:

• Type 1 Diabetes – An autoimmune condition where the body destroys insulin-producing cells.
• Type 2 Diabetes – A condition where the body becomes resistant to insulin and struggles to maintain normal glucose levels.
• Latent Autoimmune Diabetes in Adults (LADA) – A slow-progressing form of autoimmune diabetes, sometimes called Type 1.5.
• Gestational Diabetes – A temporary form of diabetes that occurs during pregnancy but increases the risk of developing Type 2 later in life.

What Causes Diabetes?

There is no single cause of diabetes. It develops due to a combination of genetic, environmental, and lifestyle factors.

• Type 1 diabetes is triggered by an autoimmune response where the immune system mistakenly attacks insulin-producing cells.
• Type 2 diabetes is influenced by obesity, inactivity, and genetics.
• Gestational diabetes develops due to pregnancy-related hormone changes that affect insulin function.

Signs and Symptoms of Diabetes

Symptoms of diabetes vary by type but often include:

• Excessive thirst and dry mouth
• Frequent urination
• Fatigue and lack of energy
• Blurred vision
• Slow-healing wounds
• Recurrent skin infections
• Tingling or numbness in the hands and feet

Because symptoms of Type 2 diabetes can be mild, many people live with the condition for years before being diagnosed. If you notice any of these symptoms, consult your doctor as early detection is key.

Type 1 Diabetes

What Is It?

Type 1 diabetes is an autoimmune disease in which the body’s immune system destroys insulin-producing cells in the pancreas. It requires lifelong insulin therapy.

Symptoms:

• Frequent urination
• Unexplained weight loss
• Extreme thirst and hunger

Who Is Affected?

Previously called “juvenile diabetes,” Type 1 diabetes can occur at any age. In fact, 62% of new Type 1 diabetes casesare diagnosed in people over 20 years old.

Treatment:

Since people with Type 1 diabetes do not produce insulin, insulin therapy is required for survival. Blood sugar levels must be closely monitored through finger-prick tests or continuous glucose monitors (CGMs).

Type 2 Diabetes

What Is It?

Type 2 diabetes occurs when the body becomes resistant to insulin or does not produce enough of it. It is the most common form of diabetes, accounting for over 90% of all diabetes cases worldwide.

Symptoms:

• Frequent thirst and urination
• Hunger, even after eating
• Fatigue
• Blurred vision
• Slow-healing wounds

Who Is at Risk?

Factors that increase the risk of Type 2 diabetes include:

• Obesity and inactivity
• Age (risk increases after 45)
• Family history of diabetes
• High blood pressure or cholesterol

Treatment:

Managing Type 2 diabetes may involve:

• Dietary changes – Reducing sugar and processed foods
• Exercise – Regular physical activity improves insulin sensitivity
• Medications – Oral medications or insulin injections if needed

Latent Autoimmune Diabetes in Adults (LADA)

What Is It?

LADA is a slow-progressing autoimmune diabetes that shares characteristics with both Type 1 and Type 2 diabetes. Often misdiagnosed as Type 2, it requires insulin therapy as the disease progresses.

Who Is at Risk?

• People over 30 years old
• Those with autoimmune disease history

Gestational Diabetes

What Is It?

Gestational diabetes occurs during pregnancy when hormones interfere with insulin function. It usually disappears after childbirth but increases the risk of Type 2 diabetes later in life.

Who Is at Risk?

• Women over 25 years old
• Those with a family history of diabetes
• Women who were overweight before pregnancy

Treatment:

• Diet and exercise to manage blood sugar levels
• Insulin therapy in some cases
• Regular glucose monitoring throughout pregnancy

Diabetes Diagnosis and Treatment

How Is Diabetes Diagnosed?

Doctors use several tests to diagnose diabetes:

• Fasting Blood Sugar Test – Measures blood sugar after fasting for at least 8 hours. A reading of 126 mg/dL or higher indicates diabetes.
• A1c Test – Measures average blood sugar levels over the past 2-3 months. A result of 6.5% or higher suggests diabetes.
• Oral Glucose Tolerance Test (OGTT) – Measures blood sugar before and after drinking a sugary liquid. A reading of 200 mg/dL or higher confirms diabetes.

Treatment Options:

Diabetes management varies by type but may include:

• Diet and lifestyle changes – Eating balanced meals and staying active
• Medications – Oral drugs or insulin therapy
• Blood sugar monitoring – Regular glucose checks to prevent complications

Some people with Type 2 diabetes can control their condition with lifestyle changes alone, while others may need medications or insulin. Type 1 and LADA require insulin therapy.

Living with Diabetes

While diabetes requires lifelong management, it doesn’t have to control your life. With the right strategies, you can stay healthy and prevent complications.

Key Strategies for Managing Diabetes:

✅ Monitor blood sugar regularly to prevent highs and lows
✅ Stay physically active – Aim for at least 150 minutes of exercise per week
✅ Follow a diabetes-friendly diet – Prioritize whole foods, fiber, and lean proteins
✅ Manage stress and get enough sleep – Both can impact blood sugar levels
✅ Work with a healthcare team – Regular checkups help prevent complications

Millions of people worldwide successfully manage diabetes with the right knowledge and support. If you suspect you have diabetes or are experiencing symptoms, consult your healthcare provider for proper evaluation and treatment.