That food is hard cheese! On a recent Dr Oz episode, May 29, 2013, Dr. William Li spoke of an European study that demonstrated that people who ate 2 slices of hard cheese daily such as Jarlsberg, Swiss Emmental or Gouda reduced their risk of developing lung cancer by 62%. This link is thought to occur because these cheeses have Vitamin K which helps to suppress tumor blood vessel growth. If you decrease the blood flow to the tumor it decreases the ability of the tumor to grow. As a popular commercial in the 80's proclaimed, "Behold the power of cheese!"