The topic of 'Smartphone Usage' is closely tied to the podcast episodes, which explore the potential impact of social media and smartphone usage on teenagers' mental health.

The episodes discuss various approaches to address this issue, such as warning labels, educational campaigns, and fostering better smartphone etiquette. They also explore the role of smartphones themselves and the constant availability of these devices in contributing to potential mental health issues and attention problems, including ADHD-like symptoms.

The episodes provide insights and practical strategies to improve focus and attention, both for those with and without ADHD, highlighting the need for a comprehensive approach that considers both online and offline factors.