Main sources of the food shortage problem include: 

1. Climate change:
    Weather event are getting more and more violent, destroying  livelihoods and reducing the quality and volumes of food production. In many regions, droughts make it impossible to grow crops and raise animals.
2. Socio-economic conditions:
   The people living in poverty often cannot afford to feed either themselves or those close to them.
3. Armed conflicts:
    Warfare destroys infrastructure and disrupts the supply and food chains. They also force people to flee from the areas where they previously could feed themselves.
4. Global inequities:
    There’s more food produced in the world than is required to feed every single human being on our planet.  However, the food is not directed to all those in need of it, sometimes due to political decisions. Additional inequalities exist in communities at the local level: the marginalization of different groups of people includes access to food.
5. Natural disasters:
   Disasters are becoming more frequent and severe, making their impact on access to food more drastic. Natural disasters also destroy infrastructure and food production conditions years ahead.