The egg yellow - also known as the 'yolk' - contains a number of proteins, as well as minerals, vitamins and fats. Eating too many yolks can be unhealthy due to their considerably high fat content. On the other hand, one yolk contains around 4.5 grams of fat, whereas the body requires fifty to seventy grams of fat per day. So eating an egg yolk or two a few times a week is not going to affect your diet in a negative way.
But if you are looking to avoid fat, you could stick to eating only the egg white - it is easy to remove the egg yolk using a fork and spoon. Egg whites contain roughly to same amount of protein as egg yolks, but consist of almost no fat whatsoever. As well as small amounts of sodium and carbohydrates, egg whites contain 90 per cent water. This makes them incredibly healthy food sources.
Eating both the yolk and the egg white is highly recommended, as it allows you to consume high quantities of protein along with other important nutrients. In addition, it prevents wastefulness, saving money on the weekly food shop. If you are animal-friendly, be sure to buy your eggs free range; these eggs come from chickens that are reared in humane, pleasant conditions.