a comprehensive approach to food security needs to include investments to promote income generating activities for the poor and thus improve their ability to purchase food importantly the payoff from hunger reduction in terms of economic growth can be substantial throughout the s the valueadded per worker in countries where of the population was undernourished was times higher than in countries where more than of the population was undernourished sources wwwfaoorgwsfswwwfaoorgwsfsfbrum wsjsforum and wwwoecdorgagriculture in more extreme cases production zones might shift