Symptoms

The symptoms of type 1 diabetes are often sudden and severe. These symptoms include:

  • Increased thirst
  • Increased hunger (especially after eating)
  • Dry mouth
  • Frequent urination
  • Unexplained weight loss (even though you are eating and feel hungry)
  • Fatigue (weak, tired feeling)
  • Blurred vision
  • Numbness or tingling of the hands or feet
  • Loss of consciousness (rare)

The symptoms of type 2 diabetes may be the same as those listed above. Most often, there are no symptoms or a very gradual development of the symptoms of type 1 diabetes.

Other symptoms include:

  • Slow healing sores or cuts
  • Itching of the skin (usually in the vaginal or groin area)
  • Yeast infections
  • Recent weight gain

Diabetes risk factors
Although the causes of diabetes are unknown, the following risk factors may increase your chance of developing diabetes:

  • A family history of diabetes (if a parent or sibling in your family has diabetes)
  • Race or ethnic background (the risk of diabetes is greater in Hispanics, African-Americans, Native Americans, and Asians)
  • Being overweight (20 percent or more over your desired body weight)
  • Hypertension (high blood pressure)
  • Abnormal blood cholesterol or triglyceride levels: HDL or "good" cholesterol level under 45 mg/dl for men and 55 mg/dl for women, and/or a triglyceride level over 150 mg/dl.
  • Age: Your risk of developing diabetes rises progressively as you get older.
  • Use of certain drugs: 
    --Blood pressure medications (such as thiazides)
    --Steroid medications (such as prednisone or Decadron [dexamethasone])
    --Hydantoin medications (such as Dilantin [phenytoin])
    --Medications for transplant recipients (such as cyclosporine)
  • Alcohol, especially if you have been a heavy drinker for years
  • Smoking
  • History of gestational diabetes (developing diabetes during pregnancy) or delivery of babies who weigh more than 9 pounds
  • Autoimmune disease: Your body's defense system (immune system) attacks certain healthy cells in your pancreas that produce insulin (beta cells).
  • Other factors, such as viruses, which may play a part in diabetes development

It is important to note that sugar itself does not cause diabetes. Eating a lot of sugar can lead to tooth decay, but it does not cause diabetes.

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