Melanie is a Wellcome Trust-funded epidemiology PhD student at the University of Bristol. Her PhD explores the effects of the daylight saving time clock changes on sleep duration (using UK Biobank accelerometer data), as well as the effects of the clock changes on cardiovascular disease, depression and road traffic injuries (using GP, hospital admissions and A&E data from England). Melanie is passionate about the use of electronic health records in epidemiology, women’s health and cancer prevention.