Scientists have pinpointed several pathways through which the immune system could disrupt neuronal functioning and thereby lead to psychotic symptoms.

Preliminary findings from a clinical trial of heavy drinkers suggest that the drug can weaken certain memories tied to the reward of imbibing, although the mechanisms aren’t fully clear.

In mice, injected fragments of a naturally occurring protein boost memory in young and old animals and improve cognition and mobility in a model of neurodegenerative disease. 

Food restriction decreases a metabolite that impedes associative learning in worms.