It could make all the difference in your memory and energy level.
Incidentally, my son did have a brain
tumor/cyst, and his symptoms were much
worse. He had a pituitary tumor, so his hormones were affected. While it is possible your symptoms could be from a hormone issue, your diet can effect your hormones.
You should share your concerns with your parents. If they think nothing is wrong with you, just send them to MedHelp for some info!