Two types of diabetes mellitus are recognized, type I insulin-dependen
t and type II non-insulin-dependent. Insulin-dependent diabetes mellit
us is characterized by autoimmune pancreatic beta-cell destruction and
absolute dependence on exogenous insulin. The much more prevalent non
-insulin-dependent variety is usually associated with hepatic and peri
pheral insulin resistance and impaired beta-cell function. Current the
rapy of non-insulin-dependent diabetes mellitus is based on lifestyle
and drug regimes that maintain blood glucose concentrations close to n
ormal. Rapid advances have recently been made in two pharmacological s
trategies, thiazolidinedione insulin-sensitizing agents and thermogeni
c/antidiabetic beta(3)-adrenoceptor agonists.