"Gesundheitsförderung und digitale Medien - Chancen, Grenzen, Herausforderungen [Health Promotion and Digital Media - Opportunities, Limits, Challenges]", lecture by C. Lampert at the opening event of "Neue Wege in der Selbsthilfe [New Ways in Self-Help]" organised by KISS Hamburg and AOK Rheinland/Hamburg on 6 April 2017 in Hamburg.