Urgent for a medical English composition of about 250 words.

Diabetes, usually referred to as diabetes for short, is a group of metabolic diseases, in which one person has hyperglycemia, either because the body can't produce enough insulin or because cells don't respond to the insulin produced. This hyperglycemia produces typical symptoms of polyuria (frequent urination), polydipsia (increased thirst) and polyphagia (increased hunger).

There are three main types of diabetes:

1. 1 type diabetes: Because the body can't produce insulin, insulin injection is needed at present. (Also known as insulin-dependent diabetes, IDDM and adolescent diabetes for short. )

2. Type 2 diabetes: the result of insulin resistance, which is a situation in which cells cannot use insulin correctly, and sometimes it is related to absolute insulin deficiency. (Formerly known as non-insulin dependent diabetes, referred to as NIDDM, adult onset diabetes. )

3. Gestational diabetes: Pregnant women who have never had diabetes before have high blood sugar levels during pregnancy. It may precede the development of type 2 diabetes.

Other forms of diabetes include congenital diabetes caused by genetic defects in insulin secretion, diabetes associated with cystic fibrosis, steroid diabetes induced by high-dose glucocorticoid and several forms of monogenic diabetes.

This is about diabetes. Good luck.