how to make a function detect when someone dies?

I have it set where when i player grabs a weapon it forces them to chat then whenever the player dies I want it to stop sending the chat until they grab the gun again

while player.Character.Humanoid.Health > 0 do

            game:GetService("Chat"):Chat(player.Character.Head, Strings[math.random(1, #Strings)])
            wait(30)
        end