Game stops responding when food and water runs out?

So I got the main part of the script from the usual ROBLOX Health script and added to make sure the stats for water and food is greater than 0.

if Food.Value > 0 and Water.Value > 0 then
        while Humanoid.Health < Humanoid.MaxHealth do
            if Food.Value > 0 and Water.Value > 0 then
                local E = wait(1)
                local Health = Humanoid.Health
                local MaxHealth = Humanoid.MaxHealth
                if Health > 0 and Health < MaxHealth then
                    local AddedHealth = 0.01 * E * MaxHealth
                    Health = Health + AddedHealth
                    Humanoid.Health = math.min(Health, Humanoid.MaxHealth)
                end
            end
        end
        if Humanoid.Health > Humanoid.MaxHealth then
            Humanoid.Health = Humanoid.MaxHealth
        end
        Regening = false
    end

When I test it and the food and water runs out, the game stops responding. Any ideas?