I see a lot of people posting about feeding their kids eggs. I don't really have a problem with that, and I am not bashing them, but I was told by pedi. not to give my kids eggs until after their first birthday.
Pediatricians are trained in infant/child development, and recognizing/diagnosing disease, not in nutrition (unfortunately -- it plays such a huge role in development and health). My pedi told me that food allergies were not hereditary. So, while I trust her in matters of development/health, I ignore her nutrition advice.
The American Academy of Pediatrics changed their recommendation on introducing highly allergenic foods in 2008.
"Although solid foods should not be introduced before 4 to 6 months of age, there is no current convincing evidence that delaying their introduction beyond this period has a significant protective effect on the development of atopic disease regardless of whether infants are fed cow milk protein formula or human milk. This includes delaying the introduction of foods that are considered to be highly allergic, such as fish, eggs, and foods containing peanut protein."