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Testosterone therapy is a form of hormone therapy in which testosterone is administered to supplement existing low level of the hormone
Cognitive function
Testosterone supplementation had mixed effects on cognitive function (5 studies). Improvement was found on some measures: spatial and verbal memory, spatial ability and spatial cognition improved in 2 studies, while working memory improved in 1 study. No improvement was found on other measures, i.e. memory recall and verbal fluency (1 study). In addition, verbal fluency failed to improve with practice (1 study).[1]