Harold E Lebovitz

State University of New York Health Science Center at Brooklyn, Brooklyn, New York

Diabetes mellitus is a syndrome in which blood glucose levels are inappropriately high for the individual's physiological state. In most populations both fasting and postprandial plasma glucose levels are continuous variables that are skewed toward the higher range. The differentiation between normal and abnormal is therefore arbitrary and must be defined by additional criteria. Diabetic retinopathy is the most common and easily quantified unique complication of diabetes mellitus. Its prevalence increases linearly with duration of diabetes. For these reasons, the diagnosis of diabetes mellitus has been defined operationally as those blood or plasma glucose levels that predict the future development of diabetic retinopathy (1). Three recent epidemiological studies have provided data on such relationships. Accordingly, diabetes mellitus is defined as described in Table 1 by a fasting plasma glucose >126 mg/dL (7.0 mmol/L) or a 2-h plasma glucose after a 75-g glucose load >200 mg/dL (11.1 mmol/L) (1). However, a dilemma is presented by the observations that macrovascular complications of diabetes melli- -o tus account for its major morbidity and mortality (2,3); we do not know how to |

define diabetes mellitus as a function of plasma glucose as it relates to the development of macrovascular disease (4,5). g1

Diabetes mellitus has many etiologies, all of which cause high plasma glucose as defined above (hyperglycemia) and carry a risk for the development of both microvascular and macrovascular complications. Disorders of glucose metabolism are defined as impaired fasting plasma glucose (IFG), impaired glucose a

Diabetes 2

Diabetes 2

Diabetes is a disease that affects the way your body uses food. Normally, your body converts sugars, starches and other foods into a form of sugar called glucose. Your body uses glucose for fuel. The cells receive the glucose through the bloodstream. They then use insulin a hormone made by the pancreas to absorb the glucose, convert it into energy, and either use it or store it for later use. Learn more...

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