Hypolipidemic, hypoglycaemic effects of the ethyl acetate extract fraction from leaves of sweet potato (Ipomoea batatas (L) Lam.) (Convonvulaceae) in obese and streptozotocin (STZ) induced type 2 diabetic mice were demonstrated. When obese-diabetic mice was administrated orally daily by ethyl acetate fraction of 1000mg lyophilized powder/kg for 21 days,