From being easy to cook to being a filling food, egg is everyone's choice. It is an ideal breakfast choice and people also love to have an egg or two during lunch. Despite being a nutrient-rich food, egg is marred with controversy, especially the yolk. Many people discard egg yolk assuming it to be loaded with unhealthy fat. However, several doctors have spoken against this myth. Egg yolk are rich in different types of nutrients, including 10 key vitamins. An egg is so rich in vitamins that eating just two eggs is believed to meet up to 30% of vitamin requirement.