True, they can have the ability to mobilise some mercury if a person is already high in sulfur. But they are not as bad as onions/garlic and do provide a good source of protein and are necessary for many on candida diets who may not have much else to choose from. They are still healthy, but again if they make you feel worse, then you'd have to lessen them or go off them completely. However, I am very sensitive to mercury and the movement of it and I can still eat eggs, I just have to watch not to combine too many sulfur foods in one meal.