Is there a way to wait 5 seconds then execute the next line of javascript, inside of a "while" event? [duplicate]

I am making a game in which the "player/user" will loose hunger. I want to make it so that when their hunger gets bellow 25 (var f) then their health (var h) will start to decrease by 20 every 5 seconds. But once the hunger goes up above 25, the health stops decreasing. This is why I am using a while event. I am not sure how to make it so the function waits five seconds, and then restarts.

function health() { 
h = 500; 
displayHealthCount();
while (f <= 25) {
  h -= 20;
displayHealthCount();
  //I want to make it so it waits for five seconds here
  }
}