Food Price Inflation and Agricultural Commodity Volatility: Drivers, Transmission, Distributional Effects and Policy Responses

Food price inflation and agricultural commodity volatility are related but distinct phenomena. Changes in globally traded grain, oilseed and other commodity quotations reach consumers through exchange rates, domestic market structures, processing and distribution costs, taxes, inventories and policy interventions. This critical narrative review integrates research on the structural and episodic drivers of price instability, the conditions governing spatial and vertical price transmission, heterogeneous household welfare consequences and the performance of policy responses. The evidence suggests that harvest shocks and energy-related input costs are important supply-side mechanisms, while stock scarcity, cross-market linkages and anticipatory trade-policy announcements can amplify price movements. International-to-domestic pass-through is highly context dependent and cannot be inferred directly from global commodity indexes. The consequences of higher food prices are also conditional: net food buyers and wage-dependent households face immediate purchasing-power losses, whereas some producers and agricultural labourers can benefit after adjustments in production and earnings. Consequently, claims that price rises necessarily increase or decrease poverty are too broad. Export bans may offer uncertain local consumer relief while shifting risk to importing economies; narrowly targeted transfers, credible information, diversified sourcing and carefully governed reserves offer more defensible responses, although each has implementation and fiscal constraints. Empirical evidence remains limited by inconsistent price measures, endogenous policies, incomplete subnational coverage and weak identification of causal mechanisms. A coherent policy framework should distinguish temporary shocks from persistent inflation, monitor food affordability alongside market prices, and match interventions to local trade dependence, household exposure and institutional capacity. Further research requires linked price, wage, stock and nutrition data, stronger quasi-experimental evaluation and explicit treatment of compound climate, energy and geopolitical shocks.