My father has been in a flare up for one year , he is currently on Humira and it seems to help a little. He complains he has mind fog and can't think clearly or make decisons correctly. He thinks he has Alzheimer's but I believe it's from the medication and just the depression from Crohn's. Also he is 72. Please I would like to know if others suffer from this to show him he's not the only one.