Green Banana VS Yellow Banana

In this book, the author discusses the correct scientific way to make healthy food choices in our lives, ketchup or mayonnaise? Cola or Diet Coke? Rice or bread? An orange or a vitamin C pill? Croissant or toast? Tonsils eradicated or Tkemha? Do you drink a lot of water, or do you need water? Do you choose to be vegetarian or eat meat?