Diabetes mellitus, commonly referred to as diabetes, is a disease characterised by
high blood sugar
) levels. Normally, these levels are controlled by
, a hormone produced by the pancreas. Insulin lowers the blood sugar level. When the blood glucose rises (e.g. after eating), insulin is released from the pancreas to normalise the glucose level. With diabetes, the absence or insufficient production of insulin causes
(raised blood glucose levels). This can result in several problems, including: blurred vision, excessive thirst, fatigue; nausea; frequent urination, weight loss despite an increase in appetite; bladder, skin and vaginal infections. There are three main types of diabetes:
Type 1 Diabetes
is usually diagnosed early in life. With this type, little or no insulin is made, so daily injections of insulin are needed. The exact cause is unknown, but genetics, viruses and autoimmune problems may play a role. Patients with type 1 diabetes usually develop symptoms over a short period of time.
Type 2 Diabetes
is the most common form of diabetes and usually occurs in adulthood. For many people (but not all) it can be prevented through living a healthy lifestyle.
develops during pregnancy in a woman who does not have diabetes. Various blood tests are used to diagnose diabetes. Although diabetes is a chronic (lifelong) condition, it can be controlled. Long-term aims are to reduce symptoms and prevent diabetes-related complications such as blindness, heart disease, kidney failure and amputation of limbs. These goals are accomplished through: blood pressure and cholesterol control; medication or insulin use; self-testing of blood glucose levels; exercise; foot care; meal planning and weight control; education and support.
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Southern Cross Health Society Affiliated Provider for Consultations
David graduated from Sheffield Medical School in the UK in 1995, completing his general ophthalmology training in South Yorkshire before embarking on . . .