JK98 sorry for the late response. My brother still feeling lost and confused, not as bad as it was before though. He started drinking natural mix juices a few days ago. His diet is not that good, he likes eating pizza, rice with chicken. He has a sense of taste and smell right now. I actually asked him about that and he said when he was really sick last time he lost his sense of smell and taste. He likes salt in his food so I don't think the sodium should suffer over it. How do I find out if he's getting enough B12? He doesn't like yogurt but he drinks milk with cereal, eggs and cheese.

Finally today I received the test results for his Mercury Blood Test and Blood Glutathione Level Test. See below...
I don't know what they mean neither the doctor that requested the per my request.

Glutathione Blood Level: Result: 1744 Units mmol/L Reference Interval > or = 669

Mercury Blood Test Result None Detected Units ug/L Reference Inverval 0.0 - 14.9

Environmental Exposure: < 15.0
Occupational Exposure:
BEI - Inorganic Mercury: 15.0