In this conversation, Dr. Tara Walker discusses the fascinating topic of adult neurogenesis, the brain's ability to produce new neurons throughout life.

She explains how this process is crucial for cognitive function and how it declines with age.

The discussion highlights the significant role of exercise in boosting neurogenesis and introduces selenium as a key factor in this process.

Dr. Walker also explores the implications of her research for cognitive health, particularly in the context of neurodegenerative diseases, and the potential therapeutic strategies that could arise from understanding neurogenesis better.