This invention contains the biwa leaf or the extract or refinement ones of biwa brown as the active ingredient, regards the eating and drinking item or the medical supply which possesses the action of 1 or more where it is selected from the group which at the same time consists of anti- high fat blood symptom action, hypertension control action, cancer cell multiplication control action, cancer cell apotoshisu induction action, active oxygen kind production action, high blood glucose fall action and anti- oxidation action.本発明は、ビワ葉又はビワ茶の抽出物又は精製物を有効成分として含有し、且つ抗高脂血症作用、高血圧抑制作用、癌細胞増殖抑制作用、癌細胞アポトーシス誘導作用、活性酸素種産生作用、高血糖降下作用及び抗酸化作用から成る群から選択される1以上の作用を有する飲食品又は医薬品に関する。
