Learn about diabetes symptoms, causes and risk factors, diagnosis and treatment options, and the complications of diabetes, including gestational diabetes.

Diabetes is one of those conditions almost everyone has heard of, yet many patients still have real questions once it touches their own life or a loved one’s. Whether you’ve just received a diagnosis, are caring for a family member, or simply want to understand your risk, this guide walks through what diabetes actually is, why it happens, and what living well with it looks like today.

What Is Diabetes?

Diabetes mellitus refers to a group of conditions that affect how your body uses blood sugar, known as glucose. Glucose is your body’s primary source of energy, fueling your muscles, tissues, and especially your brain. Normally, an organ called the pancreas releases a hormone called insulin, which acts like a key, allowing glucose to move out of your bloodstream and into your cells for use as energy.

With diabetes, this system breaks down in one way or another: either the pancreas doesn’t produce enough insulin, or the body’s cells stop responding to insulin properly. The result, in every type of diabetes, is that glucose builds up in the bloodstream instead of reaching the cells that need it. Over time, this excess blood sugar can damage blood vessels and nerves throughout the body, which is why diabetes deserves consistent attention and care.

What Are the Symptoms of Diabetes?

Diabetes symptoms depend largely on how high your blood sugar has climbed and how quickly. Some people, particularly those with type 2 diabetes or prediabetes, may have no noticeable symptoms at all for years. Others, especially with type 1 diabetes, can develop symptoms quite suddenly.

Common symptoms across types include:

• Feeling thirstier than usual
• Urinating more frequently
• Unexplained weight loss
• Fatigue and weakness
• Blurred vision
• Numbness or tingling in the hands or feet
• Slow-healing sores or cuts
• Frequent infections, including skin, gum, or vaginal infections
• Irritability or mood changes

Because type 2 diabetes tends to develop gradually and quietly, it’s often discovered during routine bloodwork rather than through symptoms a person has noticed themselves, which is one of the best reasons not to skip regular checkups.

What Are the Types of Diabetes?

Diabetes isn’t a single condition, but a family of related ones. The main types include:

• Type 1 diabetes. An autoimmune condition in which the pancreas produces little to no insulin. It’s usually diagnosed in children, teens, and young adults, though it can develop at any age, and accounts for roughly 5% to 10% of all diabetes cases. People with type 1 diabetes require insulin therapy for life.
• Type 2 diabetes. The most common form by far, making up around 90% to 95% of cases. The body either doesn’t produce enough insulin or doesn’t use it effectively. It most often develops in adults, though it’s increasingly being diagnosed in children and teens as well.
• Prediabetes. A stage where blood sugar levels are higher than normal but not yet high enough to be classified as type 2 diabetes. It’s an important warning sign, and often a reversible one, with the right lifestyle changes.
• Gestational diabetes. Diabetes that develops during pregnancy in people who didn’t previously have it. It typically resolves after delivery, but it raises the risk of developing type 2 diabetes later in life for both mother and child.
• Other specific types. These include forms caused by pancreatic damage or genetic mutations, which are less common but important for your care team to identify correctly, since treatment can differ from the more common types.

What Are the Causes of Diabetes?

At the heart of every type of diabetes is the same basic problem: too much glucose circulating in the blood because insulin isn’t doing its job properly. What differs is why that happens.

• Type 1 diabetes results from an autoimmune reaction, in which the body’s immune system mistakenly attacks and destroys the insulin-producing cells in the pancreas. The exact trigger isn’t fully understood, though genetics and environmental factors are both thought to play a role.
• Type 2 diabetes is primarily driven by insulin resistance, where cells in the muscles, fat, and liver don’t respond normally to insulin. Genetics, excess body weight, physical inactivity, and certain hormonal factors all contribute to this resistance over time.
• Gestational diabetes develops when pregnancy hormones, released by the placenta, cause insulin resistance that the pancreas isn’t able to fully overcome.
• Other, less common forms can result from physical damage to the pancreas (from conditions like pancreatitis or pancreatic surgery), certain genetic mutations, or long-term use of specific medications, including some corticosteroids.

In most cases, diabetes isn’t caused by any single factor, but by a combination of genetic predisposition and environmental or lifestyle influences.

How Is Diabetes Diagnosed?

Diagnosing diabetes typically involves one or more blood tests that measure how much glucose is in your bloodstream:

• HbA1C test. This blood test reflects your average blood sugar level over the past two to three months and doesn’t require fasting. An A1C of 6.5% or higher on two separate tests indicates diabetes, while a result between 5.7% and 6.4% indicates prediabetes.
• Fasting blood sugar test. Measured after not eating for at least eight hours. A level of 126 mg/dL or higher on two separate occasions points to diabetes.
• Random blood sugar test. Can be done at any time, regardless of your last meal. A reading of 200 mg/dL or higher, especially alongside classic symptoms, suggests diabetes.
• Oral glucose tolerance test. Used especially to screen for gestational diabetes, this test measures your blood sugar response after drinking a sugary solution.

Because early type 2 diabetes and prediabetes often cause no symptoms, many health organizations recommend screening based on risk factors, generally starting around age 35, or earlier for individuals who are overweight and have additional risk factors such as high blood pressure, a sedentary lifestyle, or a close relative with diabetes.

What Is the Management of Diabetes?

Diabetes management looks different for every person, but it generally rests on a few key pillars:

• Blood sugar monitoring. Regularly checking your glucose levels, whether with a standard glucose meter or a continuous glucose monitor, helps you and your care team understand how your body responds to food, activity, medication, and stress.
• Healthy eating. A balanced eating plan centered on vegetables, fruits, whole grains, and lean proteins, while limiting refined carbohydrates and added sugars, helps keep blood sugar within a healthy range. A registered dietitian can help tailor this to your needs, especially if you’re counting carbohydrates as part of insulin therapy.
• Physical activity. Regular exercise helps your body use insulin more efficiently and lowers blood sugar directly. Most guidelines recommend at least 150 minutes of moderate activity per week.
• Medications. Depending on the type of diabetes, this may include oral medications such as metformin, injectable non-insulin medications, or insulin therapy delivered via injection, insulin pen, or insulin pump. People with type 1 diabetes require insulin to survive; many people with type 2 diabetes manage their condition with a combination of lifestyle changes and medication, with insulin added when needed.
• Routine checkups. Regular visits with your care team, along with yearly eye exams, foot checks, and monitoring of blood pressure and cholesterol, help catch potential complications early.

Most healthcare organizations recommend an HbA1C target below 7% for many adults with diabetes, though your personal target may vary depending on your age, overall health, and how long you’ve had the condition, so it’s worth discussing your specific goal with your provider.

What Are the Complications of Diabetes?

When blood sugar remains high over long periods, it can gradually damage blood vessels and nerves throughout the body. Potential complications include:

• Cardiovascular disease, including heart attack, stroke, and narrowing of the arteries. People with diabetes face a significantly higher risk of heart-related conditions.
• Nerve damage (neuropathy), often starting as tingling, numbness, or pain in the feet and hands, and sometimes affecting digestion or other bodily functions.
• Kidney damage (nephropathy), which can progress to kidney failure requiring dialysis or transplant if left unmanaged.
• Eye damage (retinopathy), which can lead to vision loss or blindness if untreated.
• Foot problems, resulting from a combination of nerve damage and poor circulation, which can lead to slow-healing wounds and, in severe cases, amputation.
• Increased infection risk, including skin and gum infections.
• Mental health effects, with depression being notably more common among people living with diabetes.

There are also acute complications that require urgent attention, including diabetic ketoacidosis (more common in type 1 diabetes), hyperosmolar hyperglycemic state (more common in type 2 diabetes), and severe low blood sugar (hypoglycemia), all of which can become medical emergencies if not addressed quickly.

The encouraging news is that consistent blood sugar management significantly reduces the risk of developing these complications over time.

What Is the Prognosis for Diabetes?

The outlook for diabetes varies from person to person and depends on several factors: the type of diabetes, how consistently it’s managed, how early it was diagnosed, and whether other health conditions are present. Left uncontrolled, chronic high blood sugar can lead to serious, sometimes irreversible complications, and diabetes remains among the leading causes of death worldwide.

That said, this isn’t the full picture for most patients. With consistent management, regular monitoring, and a collaborative relationship with your care team, people with diabetes can, and do, live long, full, and healthy lives. Studies consistently show that keeping HbA1C levels within target range meaningfully reduces the risk of complications. Diabetes management has also advanced considerably in recent years, with more effective medications, continuous glucose monitors, and insulin delivery systems making day-to-day control more achievable than ever before.

When Should I See My Healthcare Provider?

You should reach out to a healthcare provider if you notice possible symptoms of diabetes, such as unusual thirst, frequent urination, or unexplained fatigue, even if they seem mild. Earlier diagnosis allows treatment to begin sooner, which meaningfully improves long-term outcomes.

If you’ve already been diagnosed with diabetes, regular follow-up with your care team, whether a primary care provider or an endocrinologist, is essential, not optional. Seek urgent or emergency care if you experience signs of a serious complication, such as confusion, difficulty breathing, a fruity smell on the breath, persistent vomiting, or symptoms of severely low blood sugar, such as shaking, disorientation, or loss of consciousness.

Living with diabetes, or supporting someone who does, can feel overwhelming at times. But you don’t have to navigate it alone. ALMehwar Hospital’s outpatient clinics offer comprehensive diabetes screening, diagnosis, and ongoing management, with a care team dedicated to helping you stay on track. Whether you need your first screening, a second opinion, or continued care for an existing diagnosis, we’re here to support you every step of the way.

Schedule an appointment with ALMehwar Hospital’s outpatient clinics today, and take a confident step toward better managing your health.