First of all, upgrade your Farms to increase the rate of your Food production. You can also use Items available at the Black Market to increase the Food production. Paragon Status bonuses include Food Production Boosts, as well; the higher your Paragon Level, the greater the bonus it grants.
Moreover, the following features and buildings can help you reduce your Food consumption rate:
- House of Unity;
- Obelisk of Power - update respective Skills to improve your Food production;
- Spring of Life.