Hunger

Over time, the player's hunger meter will decrease. If it gets too low, a countdown will appear on screen telling the player that they need to eat. If the player lets the countdown run out, they'll immediately die. Eating food will recover the player's hunger meter according to the food item's listed Hunger Fill value. Acquiring too much radiation will cause the player to throw up, which will reduce the player's hunger meter. Eating certain food items (like Rotten Food) or drinking Tainted Water will cause the player to acquire the Sick effect, which will cause them to throw up multiple times, reducing the player's hunger meter each time.

Starvation warning