Do Troops Die If I do not Feed Them

Do troops die if I do not feed them?

If you have food available and your troops consume more than you produce (your upkeep is higher than your food production), you will lose food. However if you do not have any food, your troops will not starve, so, besides the inconvenience of planning food for your next research, building upgrade, troop training etc, there is no real issue of having negative upkeep food balance and zero food.