An amino acid called taurine spurs the growth of new brain cells, even in old age. Taurine has also been shown to help protect against factors involved in neurological decline and stroke damage.
The Functions of Taurine, Neurogenesis: Keeping the Brain Tuned Up, Defense Against Excitotoxicity, Brain-Damaging Beta-Amyloid, Protection Against Dementia, Diminishing the Impact of Stroke, Reducing Damage Due to Head Injury, Reducing the Effects of Neurotoxins, Summary, References.