That is just part of several main things that can arise when war conditions begin to occur in a place. Because in general war can make the economy worse so that things such as foodstuffs and ready-to-use food are also affected by no longer being able to be supplied as they should. So these things were the first to experience bad influences apart from other things such as education and the development of the country's infrastructure which had not been completely repaired before the war occurred.
Apart from that, war itself can also destroy all agricultural land which can still be used as a basic source of food for local residents so that the food sector itself can suddenly experience paralysis if the war is still going on and never ends. Because farmers in war areas will definitely not be able to carry out their own activities as usual because they have to continue to protect themselves from war attacks, so this can really paralyze all economic sectors in a certain area.