PROBLEM TO BE SOLVED: To provide a functional food which can safely inhibit the advance of glycemia and hypertension occupying the core of life-style related diseases. SOLUTION: This functional food for inhibiting the elevation of blood glucose or blood pressure is characterized by containing the extract of the whole body (pericarp-containing fruit) of a dwarf citrus fruit comprising the hybrid of a citrus with a kumquat which is a kind of the genus Fortunella in the family Rutaceae, is native to Philippine and the southern area of China, and is widely cultivated in the Southeast Asia. COPYRIGHT: (C)2003,JPO