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Type 2 diabetes – Symptoms and Causes

Type 2 diabetes is a chronic condition that affects the way your body metabolizes sugar (glucose) — an important source of fuel for your body. With type 2 diabetes, your body either resists the effects of insulin — a hormone that regulates the movement of sugar into your cells — or doesn’t produce enough insulin to maintain normal glucose levels.

Type 2 diabetes used to be known as adult-onset diabetes, but today more children are being diagnosed with the disorder, probably due to the rise in childhood obesity. There’s no cure for type 2 diabetes, but losing weight, eating well and exercising can help manage the disease. If diet and exercise aren’t enough to manage your blood sugar well, you may also need diabetes medications or insulin therapy.

Symptoms

Signs and symptoms of type 2 diabetes often develop slowly. In fact, you can have type 2 diabetes for years and not know it. Look for:

  1. Increased thirst
  2. Frequent urination
  3. Increased hunger
  4. Unintended weight loss
  5. Fatigue
  6. Blurred vision
  7. Slow-healing sores
  8. Frequent infections
  9. Areas of darkened skin, usually in the armpits and neck

Causes

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Type 2 diabetes develops when the body becomes resistant to insulin or when the pancreas is unable to produce enough insulin. Exactly why this happens is unknown, although genetics and environmental factors, such as being overweight and inactive, seem to be contributing factors.

How insulin works

Insulin is a hormone that comes from the gland situated behind and below the stomach (pancreas).

  1. The pancreas secretes insulin into the bloodstream.
  2. The insulin circulates, enabling sugar to enter your cells.
  3. Insulin lowers the amount of sugar in your bloodstream.
  4. As your blood sugar level drops, so does the secretion of insulin from your pancreas.

The role of glucose

Glucose — a sugar — is a main source of energy for the cells that make up muscles and other tissues.

  1. Glucose comes from two major sources: food and your liver.
  2. Sugar is absorbed into the bloodstream, where it enters cells with the help of insulin.
  3. Your liver stores and makes glucose.
  4. When your glucose levels are low, such as when you haven’t eaten in a while, the liver breaks down stored glycogen into glucose to keep your glucose level within a normal range.

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