Supplementing with L-Tyrosine helps replenish catecholamine brain chemicals, thereby supporting a range of benefits for cognitive performance
Ultrastructural immunocytochemical observations on the localization, metabolism and transport of glutamate in normal and ischemic brain tissue

Postinfectious Manifestations Associated With Enteric Pathogens Manifestation Organisms Erythema nodosum Yersinia, Campylobacter, Salmonella, Shigella Shigella, Campylobacter, Yersinia Campylobacter Campylobacter, Yersinia STEC, Shigella dysenteriae serotype 1 Campylobacter Salmonella, Shigella, Campylobacter, Yersinia, Giardia (rarely), Cyclospora cayetanensis Campylobacter, Salmonella, Shigella, STEC, Giardia Listeria, Salmonella (infants 3 mo old are at high risk) Salmonella (including Salmonella Typhi), Shigella, Campylobacter, Yersinia, Entamoeba histolytica Shigella Glomerulonephritis Guillain-Barr syndrome Hemolytic anemia Hemolytic uremic syndrome Immunoglobulin A nephropathy Reactive arthritisa Postinfectious irritable bowel syndrome Meningitis Intestinal perforation Ekiri syndrome (lethal, toxic encephalopathy) and/or seizure Aortitis, osteomyelitis, extravascular deep tissue focus Hemolytic anemia Sickle cell disease Malignancy Lymphoma Leukemia Disseminated carcinoma Immunosuppression AIDS Corticosteroids Chemotherapy, radiotherapy Achlorhydria Gastric surgery Proton pump inhibitors Idiopathic Ulcerative colitis Salmonella, Yersinia Schistosomiasis Abbreviation: STEC, Shiga toxinproducing Escherichia coli

"Really works!" nicholas J
Researchers found that a diet deficient in folate, B12, & B6 caused cognitive dysfunction and a significant reduction in the length & density of brain capillaries (9, 10)