Eggs are perfect sources of protein. The only downside is that they are high in cholesterol at 213 mg per egg. Actually, it is the egg yolk that you need to be concerned with in regards to cholesterol, so limit whole eggs to 3 to 4 per week. You may eat as many egg whites as you please. The yolk of the egg is not all bad. It contains a number of different vitamins that are very healthy. So, yes, it is okay to eat the yolk, just limit the number you eat per week.