Is it true that eggs and milk should not be kept on the door of the refrigerator—and if so, why?
It is true: the door is the warmest spot in your fridge. Every time you open the door, items stored there are directly exposed to your warmer kitchen. Items in the very back of the shelves, on the other hand, stay the coolest. Milk and eggs are highly perishable and should be kept at a steady, cool temperature. The door shelves are better suited to less perishable items like ketchup, salad dressing, soda, and jams and jellies.
For more food storage tips, see Can Your Refrigerator Kill You?