Hi Brea is right try and cut out meat, animal products including dairy and the higher phe foods gradually. Look up the PKU clinic who can help advise you what is best, plus give you information about doing blood tests, PKU support groups etc. nAnxiety seems to be in our family as well with my father and sisters mainly. I am fine when I keep to my diet but if I eat higher phe foods it is amazing the change in my anxiety levels. nGood Luck and keep us updated on your progress.