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What is Diabetes?

Diabetes mellitus, often referred to simply as diabetes, is a chronic metabolic disorder characterized by high blood sugar levels (hyperglycemia) resulting from defects in insulin production, insulin action, or both. Insulin is a hormone produced by the pancreas that helps regulate blood sugar levels and allows cells to utilize glucose for energy.

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Type of Diabetes?

There are several types of diabetes, including:

Type 1 Diabetes

Type 1 diabetes, formerly known as insulin-dependent diabetes or juvenile diabetes, is an autoimmune condition in which the immune system mistakenly attacks and destroys the insulin-producing beta cells in the pancreas. This results in little to no insulin production. People with type 1 diabetes require lifelong insulin therapy to survive.

Type 2 Diabetes

Type 2 diabetes, formerly known as non-insulin-dependent diabetes or adult-onset diabetes, is the most common form of diabetes. It occurs when the body becomes resistant to the effects of insulin or when the pancreas fails to produce enough insulin to maintain normal blood sugar levels. Type 2 diabetes is strongly associated with obesity, physical inactivity, and genetic predisposition.

Gestational Diabetes

Gestational diabetes develops during pregnancy and is characterized by high blood sugar levels that occur for the first time during pregnancy. It usually resolves after childbirth, but women who have had gestational diabetes are at increased risk of developing type 2 diabetes later in life.

What are the symptoms of Diabetes?

The symptoms of diabetes can vary depending on the type of diabetes and its severity. Common symptoms of diabetes include:

Frequent Urination (Polyuria)

Excess sugar in the blood leads to increased urination as the kidneys work to remove the excess glucose from the body.

Increased Thirst (Polydipsia)

Excessive urination can lead to dehydration, causing increased thirst.

Increased Hunger (Polyphagia)

Despite eating, individuals with diabetes may experience persistent hunger because the body’s cells are unable to properly utilize glucose for energy.

Unexplained Weight Loss

Despite increased hunger and eating, some individuals with diabetes may experience unexplained weight loss. This occurs because the body is unable to effectively use glucose for energy, so it starts breaking down fat and muscle tissue for fuel.

Fatigue

Feeling tired or fatigued is common in individuals with diabetes, especially if blood sugar levels are consistently high.

Blurred Vision

High blood sugar levels can cause temporary changes in the shape of the lens of the eye, leading to blurred vision.

Slow Healing of Wounds

Diabetes can impair the body’s ability to heal wounds and injuries, leading to slow wound healing and an increased risk of infections.

Frequent Infections

High blood sugar levels can weaken the immune system, making individuals with diabetes more susceptible to infections, particularly urinary tract infections, yeast infections, and skin infections.

Tingling or Numbness in Hands or Feet (Diabetic Neuropathy)

Diabetes can damage the nerves, leading to tingling, numbness, or pain in the hands, feet, or other parts of the body.

Dry Skin and Itching

Diabetes can cause dry skin and itching, particularly in the lower legs and feet.

What Causes Diabetes?

The causes of diabetes vary depending on the type of diabetes. The main types of diabetes are type 1 diabetes, type 2 diabetes, and gestational diabetes. Each type has different underlying causes:

Type 1 Diabetes

  • Autoimmune Response: Type 1 diabetes is primarily caused by an autoimmune response in which the body’s immune system mistakenly attacks and destroys the insulin-producing beta cells in the pancreas. This results in little to no insulin production. The exact trigger for this autoimmune response is not fully understood, but genetic and environmental factors, such as viral infections, may play a role.

Type 2 Diabetes:

  • Insulin Resistance: Type 2 diabetes occurs when the body becomes resistant to the effects of insulin or when the pancreas fails to produce enough insulin to maintain normal blood sugar levels. Insulin resistance is often associated with obesity, physical inactivity, and genetic predisposition.
  • Genetic Factors: Family history and genetics also play a role in type 2 diabetes risk. Having a family history of diabetes increases the likelihood of developing the condition.
  • Lifestyle Factors: Unhealthy lifestyle habits, such as poor diet, lack of physical activity, and excess weight, contribute to the development of type 2 diabetes. Obesity, particularly excess abdominal fat, increases insulin resistance and the risk of type 2 diabetes.
  • Age and Ethnicity: Age and ethnicity are also risk factors for type 2 diabetes. The risk of type 2 diabetes increases with age, and certain ethnic groups, such as African Americans, Hispanic/Latino Americans, Native Americans, Asian Americans, and Pacific Islanders, are at higher risk.

Gestational Diabetes:

  • Hormonal Changes: Gestational diabetes develops during pregnancy and is caused by hormonal changes that affect insulin sensitivity. During pregnancy, the placenta produces hormones that can interfere with insulin action, leading to high blood sugar levels.
  • Risk Factors: Risk factors for gestational diabetes include being overweight or obese, having a family history of diabetes, being older than 25, having had gestational diabetes in a previous pregnancy, and certain ethnic backgrounds.

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