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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 ]
This is an accepted version of this page This is the latest accepted revision, reviewed on 14 February 2025. Group of endocrine diseases characterized by high blood sugar levels This article is about the common insulin disorder. For the urine hyper-production disorder, see Diabetes insipidus. For other uses, see Diabetes (disambiguation). Medical condition Diabetes Universal blue circle symbol ...
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]
Maturity-onset diabetes of the young (MODY) refers to any of several hereditary forms of diabetes mellitus caused by mutations in an autosomal dominant gene disrupting insulin production. [1] Along with neonatal diabetes , MODY is a form of the conditions known as monogenic diabetes.
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 is a progressive condition in which the body becomes resistant to the normal effects of insulin and/or gradually loses the capacity to produce enough insulin in the pancreas. [2] Pre-diabetes means that the blood sugar level is higher than normal but not yet high enough to be type 2 diabetes. [3]
Type 3 diabetes is a proposed pathological linkage between Alzheimer's disease and certain features of type 1 and type 2 diabetes. [1] Specifically, the term refers to a set of common biochemical and metabolic features seen in the brain in Alzheimer's disease, and in other tissues in diabetes; [1] [2] it may thus be considered a "brain-specific type of diabetes."
The main goal of diabetes management is to keep blood glucose (BG) levels as normal as possible. [1] If diabetes is not well controlled, further challenges to health may occur. [1] People with diabetes can measure blood sugar by various methods, such as with a BG meter or a continuous glucose monitor, which monitors over several days. [2]