An apparatus has two current supply electrodes (102, 103) arranged on the circumferential surface of a subject (101) with the distance between the electrodes (102, 103) being sufficiently shorter than a circumferential length of the subject (101) a first measuring electrode (105) arranged on the subject (101) in the vicinity of one of the current supply electrodes (102, 103) a second measuring electrode (111) arranged on the subject (101) substantially opposite to the current supply electrodes (102, 103) across the subject (101) or a second measuring electrode (106) arranged on the subject (101) in the vicinity of the other of the current supply electrodes a voltage measuring unit (107) to supply a current between the current supply electrodes (102, 103) and measure a voltage generated between the first (105) and the second (106, 111) measuring electrodes and a computing unit (125) to compute a visceral fat quantity of the subject (101) according to the measured voltage and a characteristic quantity representing the size of the subject.
