Gregory Hartwell

Gregory Hartwell is a Clinical Assistant Professor at the London School of Hygiene & Tropical Medicine (LSHTM) within the Department of Public Health, Environments & Society. He also holds an Honorary Consultant position in Public Health at the Office for Health Improvement & Disparities.

• PhD (2016-2019), MSc (2011-2013) - LSHTM
• BA (Hons) English Language & Literature - University of Oxford

His research focuses on adolescent mental health, addiction, health inequalities, and commercial determinants of health. He has led studies on e-cigarette use, social media impacts on youth wellbeing, and regulatory challenges in tobacco/alcohol industries.

Recent publications highlight his work on:

• Digital platforms' influence on mental health (TikTok, social media)
• Commercial determinants across tobacco, alcohol, and ultra-processed food industries
• Ethical challenges in public health research with vulnerable populations

• NIHR Three Schools Mental Health Research Fellowship (2022-2024)
• ESRC Postdoctoral Fellowship (2020-2022)
• NIHR grant for e-cigarette user study (2016-2019)

He collaborates with institutions like Harvard Kennedy School and University of Keele, and contributes to policy discussions through publications in journals such as BMJ, Health Promotion International, and PLOS Global Public Health.