cerebral paresis

Hi dr.Hardy, I have another question for you
A neighbour friend, 10 years old, is affected by a cerebral paresis since birth. The left part of his body is weaker, he walks ok, even if limping, but cannot run fast. Both the leg and the arm are affected. Doctors said that the cause of the cerebral paresis is that the mother had pre-eclampsia in the end of the pregnancy, they induced an earlier delivery but it wasn't enough.
His diet is the norwegian correspondent of SAD, and it is not about to change. He even asks for the leaf of salad to be removed from his BigMac! But never say never.
Is there anything that he could do to reverse or at least alleviate his condition?
Thank you doctor