Graham is a scientist with over 25 years of research experience, publishing over 80 research papers and two books. He is head of the Division of Epidemiology and Biostatistics, and lead of the TIME research group (Temporal Influences of Metabolic Events), which is focussed on the effects of sleep on health. He is also a member of the editorial board for Circadian Rhythms. He has delivered seminars on ways to improve sleep and health, including the use of yoga for helping to deal with problems with sleep and general sleep health.