Chloe Burke is a final-year PhD student at the University of Bath, based in the Addiction and Mental Health Group and funded by the SSA. Chloe obtained her MRes at Bath in 2020, examining the feasibility of warning labels to communicate the risks of smoking for mental health. Prior to this, she worked as a low-intensity mental health practitioner in NHS primary-care. Her work aims to better understand the causal role of substance use in mental illness, through triangulating evidence across statistical (e.g. multivariable regression) and design-based (e.g. Mendelian randomization) approaches to causal inference.