Eggs The humble egg can be your best friend in terms of losing weight. Eggs are a rich source of protein and nutrients, and are not only good for you (in moderation) but very filling. Not only it is cheap, it is simply delicious! The good part about this food is that it makes you feel full. An egg provides our body's requirement of essential amino acids along with potassium, calcium, iron, vitamin A, vitamin B2, vitamin B9, vitamin B6 and vitamin B12. Egg white omelettes are a popular choice for the health conscious people around the world.