This chapter describes the consumption patterns, in classical Greece, which were affected by regional productive capacities, inter-regional distribution, and several social and geographical biases, as well as ideology and taste. It gives some quantitative assessment of standards of living in comparison to earlier and later periods. Since markets and exchange supplied only a certain amount of domestic consumption, the chapter explores under what conditions consumption turned into demand that affected the economy more generally. Basic information about ancient nutrition can be gained from the remains of human bones. Average height changed little from the Bronze Age to the classical period, and possibly increased slightly for men thereafter. The discrepancy between Mycenae and Lerna may indicate a class difference. The need for imported grain varied from year to year with periods of extraordinary demand at times of food crisis. The seasonality of demand put high pressure on administration and planning, and could not be satisfied by regular markets.