Testosterone helps new brain cells survive, but timing matters, study in male rats suggests

Adult neurogenesis is how the adult brain produces new neurons. The newborn cells divide, migrate to specific brain regions and then mature into neurons. Scientists have observed that prolonged testosterone exposure promotes neurogenesis in the adult brain's hippocampus, a region crucial to memory and learning. However, it remains a mystery whether testosterone must act during specific periods of neural development to improve the survival of these new neurons.

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