Diabetes is a common chronic health condition. The condition affects how the body processes blood sugar, the main source of fuel for muscles, organs, and the brain. This condition often develops gradually, but people may have elevated blood sugar for years before receiving a diagnosis. Learning how the condition works and how it is managed can help individuals recognize when to seek medical evaluation.
What Is Diabetes?
After a meal, the digestive system breaks food down into glucose, which then enters the bloodstream. Insulin is a hormone produced by the pancreas, and it allows that glucose to move into cells for energy. Diabetes develops when the body makes too little insulin or cannot use it effectively. As a result, glucose builds up in the blood rather than reaching the cells. Three types account for most diagnoses.
Type 1 Diabetes
In type 1 diabetes, the pancreas produces little or no insulin. Researchers believe an autoimmune process causes the immune system to attack the insulin-producing cells of the pancreas. This type is most often diagnosed in children and adolescents, but it can appear at any age.
Type 2 Diabetes
Type 2 diabetes, the most common form, occurs when the body’s cells become less responsive to insulin. Family history contributes to this type, and factors such as diet, activity level, and body weight may also play a role. Most diagnoses occur in adulthood.
How Is It Diagnosed?
Symptoms vary by type. Type 1 diabetes tends to cause symptoms that appear quickly, but type 2 often progresses slowly and can produce no noticeable changes in its early stages. When symptoms do develop, they may include:
- Tingling sensation or numbness in the hands or feet
- Blurred vision
- Frequent urination
- Excessive thirst or hunger
- Persistent fatigue
- Itchy skin
- Slow-healing cuts or sores
- Recurring yeast infections
These signs can have other causes, and diabetes is identified through blood testing. A fasting plasma glucose test measures blood sugar after at least eight hours without food. The A1C test reflects average blood sugar over the previous two to three months. Routine screening can also detect prediabetes, a stage in which blood sugar is higher than normal but not yet in the diabetic range.
How Is It Treated?
Diabetes management strategies vary, according to the type of diabetes, its stage, and each person’s overall health. Most plans aim to keep blood sugar within a target range set by a healthcare provider. Lifestyle adjustments are often the first approach for prediabetes, early type 2 diabetes, and gestational diabetes. Reducing added sugars and carbohydrates lowers the amount of glucose the body must process. Regular physical activity helps muscles use glucose more efficiently, and even a brief walk may help moderate blood sugar levels. Some providers also recommend a structured weight management program, since reaching and maintaining a healthy weight can improve how the body responds to insulin.
When lifestyle changes do not keep blood sugar within range, a provider may prescribe medications. People with type 1 diabetes require insulin therapy because their bodies cannot produce enough of the hormone. Some individuals with advanced type 2 diabetes need insulin as well, and it may be delivered by injection or through a wearable pump.
Consult an Internal Medicine Specialist
Persistently high blood sugar can affect the heart, kidneys, eyes, and nerves over time. Internal medicine specialists focus on the prevention, diagnosis, and management of chronic conditions in adults, allowing them to monitor diabetes alongside related health concerns within a single, coordinated plan. A specialist is able to order appropriate testing, and they may develop a care plan suited to each person’s health needs and daily routine.
