What are harmful foods that can negatively impact a child's learning?

Harmful foods that can negatively impact a child’s learning. A lot of the processed foods, junk food such as that, you want this child to be eating a well-balanced diet; fruits, vegetables you know the occasional junk food here and there is okay; but they are staple of their diet it's not going to work out well for them. Their learning is going to be negatively impacted by that, they are not going to be able to stay awake; they are not going to be able to concentrate on things that they need to. So you want to keep that diet as balanced as possible.