Dr Sarah Floud
Sarah Floud
BSc MSc PhD
Associate Professor
- Cancer Epidemiology Unit
Sarah Floud is a Senior Epidemiologist in the Cancer Epidemiology Unit (CEU) and Co-Principal Investigator of the Million Women Study. Since 2016 she has been responsible for work on risk factors for dementia in the Million Women Study.
Sarah’s role at CEU involves conducting epidemiological research into risk factors for dementia, cancer and heart disease. Her work has mainly focused on social risk factors such as marital status, socio-economic status, social activities and social isolation, but also other lifestyle factors such as physical activity and body mass index. She is responsible for writing the re-survey questionnaires.
Sarah is also a lecturer and module lead on the MSc in Global Health Science, where she lectures on social epidemiology and dementia epidemiology, and co-leads the module ‘Introduction to Global Health Science’.
She has a background in social science, having studied at the London School of Economics and worked in social research. She has a PhD in epidemiology from Imperial College London.
Recent publications
The aetiology of breast cancer subtypes: results from the Million Women Study.
Journal article
Reeves G. et al, (2025), Breast Cancer Res, 28
Prospective associations of diabetes with 15 cancers in 2.2 million UK and Chinese adults.
Journal article
Liu B. et al, (2025), J Natl Cancer Inst, 117, 2477 - 2487
Social inequalities in the use of formal and informal home care in older women: evidence from a large UK cohort study.
Journal article
Quinn M. et al, (2025), Age Ageing, 54
Hypertension in pregnancy and in midlife and the risk of dementia: prospective study of 1.3 million UK women.
Journal article
Floud S. et al, (2025), Alzheimers Dement, 21
Oral contraceptive use and risk of liver cancer: a population-based study, systematic review, and meta-analysis.
Journal article
Watling CZ. et al, (2025), Lancet Oncol, 26, 1031 - 1042

