The average people eat 250 eggs per year. That’s 76.5 billion eggs in total. Iowa produces the most eggs out of any state in the US at 15 billion per year. That’s almost one fifth of the country’s supply. The colour of the shell depends on the breed of the hen that laid it. Hens with white feathers usually lay white eggs, and red hens lay brown eggs. The colour of the yolk depends on the hen’s diet. A dark yellow yolk means the hen ate vegetables, and a lighter yolk indicates a diet of wheat and barley. The age of a hen affects the size of an egg. The older the hen, the bigger the egg. Eggs come with a “sell by” date, not an expiration date. You can keep them for three to four weeks after the date on the carton. Two eggs will give you more than enough cholesterol for the day. One egg contains about 186 milligrammes of cholesterol, and the USDA recommends capping our intake at 300 milligrammes.