In this episode, Dr. Alison Bentley discusses the relationship between sleep and mental health, particularly focusing on anxiety and depression. Dr. Bentley explains how insomnia and other sleep disorders, like sleep apnea and restless leg syndrome, can contribute to the development of mood disorders, as well as how existing mental health conditions can disrupt sleep patterns. She gives an in-depth overview of different types of insomnia (acute, chronic, and insomnia disorder) and their underlying causes, perpetuating factors, and treatment approaches like cognitive behavioural therapy for insomnia (CBTI). The episode emphasises the importance of addressing sleep issues to improve mental health and overall well-being.