GOING HUNGRY
This will make it so if your hero doesn't eat he'll go hungry and die.

Things to know:
Switches
Items
Wait

Make an Item called 'food' (or 'steak and potatoes dinner' for all I care) it should be a switch item. Make it turn on a switch called 'Feed'. Make a Parallel common event called 'going hungry', activated by a switch called 'eaten':

WAIT 60.0
(Put waits as many times as you want)
MESSAGE "_hero name_ is getting hungry"
(WAIT some more)
GAME OVER

It is easy
Now make a Parallel common event called 'eating food', activated by a switch called 'feed' Make it:

CHANGE SWITCH OFF 'eaten'
CHANGE SWITCH ON 'eaten'    (This resets going hungry)
CHANGE SWITCH OFF 'feed' 

There! Now at the start of the game, turn on switch 'eaten' and you have it.