Question: what are the vitamins in egg yolk?
Answer: Antioxidant boost: Egg yolks contain vitamins A, D, E and K along with omega-3 fats. Compared to the whites, egg yolks are also rich in folate and vitamin B12. 5. The yolks are also packed with tryptophan and tyrosine, and amino acids that help prevent heart diseases, notes the book Healing foods.