Thank you for all those links. I have asked my brother to find out his T3 and T4 levels, if they are normal than he does not have o worry, as per the link from Dr. Brownstein.
Only thing is I still have a question, high TSH means hypo or hyper? My brother was told that it was hyper, but I have read so much already and many articles call TSH above 5, Hypo.