For at least half a century we have been cautioned against eating eggs. The rational was that since eggs have a high cholesterol content eating them would raise blood cholesterol and increase the risk of heart disease.
The truth is that this fear was not based on actual science. Dietary cholesterol has relatively little effect on blood cholesterol. In fact the real culprits are saturated fats and trans fats. A large study of nearly half a million people followed for 8 to 22 years found no relationship between eating one egg a day and the incidence of heart disease and stroke.
The bottom line is that eggs are an excellent source of protein and other nutrients including choline, carotenoids, lutein, and some vitamins. For most people, easting an egg a day will have no ill effects. In fact it may even be beneficial.