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Diabetes, also known as diabetes mellitus, is a group of common endocrine diseases characterized by sustained high blood sugar levels. [10] [11] Diabetes is due to either the pancreas not producing enough of the hormone insulin, or the cells of the body becoming unresponsive to insulin's effects. [12]
As of 2011 more than 36 genes have been found that contribute to the risk of type 2 diabetes. [2] All of these genes together still only account for 10% of the total genetic component of the disease. [2] There are a number of rare cases of diabetes that arise due to an abnormality in a single gene (known as monogenic forms of diabetes). [1]
Today, the term "diabetes" most commonly refers to diabetes mellitus. Diabetes mellitus is itself an umbrella term for a number of different diseases involving problems processing sugars that have been consumed (glucose metabolism). Historically, this is the "diabetes" which has been associated with sugary urine .
Type 2 diabetes (T2D), formerly known as adult-onset diabetes, is a form of diabetes mellitus that is characterized by high blood sugar, insulin resistance, and relative lack of insulin. [6] Common symptoms include increased thirst , frequent urination , fatigue and unexplained weight loss . [ 3 ]
Type 3c diabetes (also known as pancreatogenic diabetes) is diabetes that comes secondary to pancreatic diseases, [1] involving the exocrine and digestive functions of the pancreas. It also occurs following surgical removal of the pancreas. Around 5–10% of cases of diabetes in the Western world are related to pancreatic diseases.
Specialty: Hematology and oncology: Symptoms: Bleeding, bruising, fatigue, fever, increased risk of infections [2] Usual onset: All ages, [3] most common in 60s and 70s. [4] It is the most common malignant cancer in children, but the cure rates are also higher for them.
Micrograph showing a colorectal carcinoma metastasis to the cerebellum. HPS stain.. A brain metastasis is a cancer that has metastasized (spread) to the brain from another location in the body and is therefore considered a secondary brain tumor.
Pre-gestational diabetes can be classified as Type 1 or Type 2 depending on the physiological mechanism. Type 1 diabetes mellitus is an autoimmune disorder leading to destruction of insulin-producing cell in the pancreas; type 2 diabetes mellitus is associated with obesity and results from a combination of insulin resistance and insufficient insulin production.