There are four Nutriments (āhāra) in the sense of ‘cause’ or ‘condition’ necessary for the existence and continuity of beings: (1) ordinary material food (kabaliṅkārāhāra), (2) contact of our sense-organs (including mind) with the external world (phassāhāra), (3) consciousness (viññāṇāhara) and (4) mental volition or will (manosañcetanāhāra).
