Dr. Larry Smarr's talk at the Quantified Self Conference highlights the rapid increase in personal health data collection over the last decade, with a focus on his journey of self-tracking various health metrics to manage chronic inflammation and pre-diabetes. He emphasizes the role of diet, specific biomarkers, and the potential links between genetics, microbiomes, and autoimmune diseases like Crohn's. The talk advocates for using emerging technology to enhance personal data analysis for better health management.