Personal profile


Professor Petra Wark is a nutritional and chronic disease epidemiologist with an additional background in applied statistics as well as learning and teaching. 

Her current research focuses on the use, development, characteristics and validation of digital health technologies (e.g. wearables, apps, platforms) for enhancement of wellbeing or disease prevention or management.  Examples of her recent work include leading the validation study of myfood24, a new online dietary assessment tool for the UK; leading the validation study of new technology for blood pressure measurement and management; and systematic assessment of mobile apps. 

Earlier in her career, she aimed to gain a better understanding of the causation of chronic diseases by using data of large cohort studies. She did so whilst combining research with a role of MSc course organiser, running several epidemiology and chronic disease modules and co-founding and running a leading short course. 

Within the Centre for Technology Enabled Health Research, she is leading the "Innovation, Design and Technology" (IDT) theme and supervises PhD students. She is also an officer for the e- & mHealth Special Interest Group (SIG) of the International Society of Behavioral Nutrition and Physical Activity (ISBNPA), and Associate Editor of the Nutrition Journal

Research Interests

  • Efficacy and effectiveness of digital health technologies in primary and secondary chronic disease prevention; and methodological aspects thereof
  • Validation, evaluation and assessment of diet, lifestyle, wellbeing and health status using new digital technologies (including other aspects of health)
  • Nutritional and chronic disease epidemiology
  • Interdisciplinary and innovation research projects

Vision Statement

New digital health solutions and technologies emerge daily. Several of these developments are very exciting. They have potential to improve one’s wellbeing or health. Many others are not yet optimal and/or do not meet society’s, the health care system’s or the user’s needs. A technological solution is also not always the most appropriate.

It is important to optimise the chances of making a true impact. I believe that technologies should be validated /evaluated throughout their lifecycle, and should be evidence-based. Sometimes my work starts while the technology is being developed or improved. My work can also start after the technology is being implemented, or when already on the market. Doing so requires insight and methods from several disciplines. I thus collaborate with people from different backgrounds. I also collaborate with industry. 

Education / Academic qualification

Postgraduate Certificate, London School of Hygiene and Tropical Medicine

Sep 20108 Jun 2012

Doctorate, Wageningen University and Research Centre

May 200016 Jan 2007

MSc, Radboud University Nijmegen

1 Sep 199527 Apr 2000

External positions

Honorary Senior Lecturer in eHealth, Imperial College London

1 Jan 2017 → …

Assistant Director of Global eHealth Unit, Department of Primary Care and Public Health, Imperial College London

1 Apr 201431 Dec 2016

Research Fellow, Department of Epidemiology and Biostatistics, Imperial College London

5 Jan 200931 Mar 2014

Research Fellow, Non-Communicable Disease Epidemiology Unit, London School of Hygiene and Tropical Medicine

15 Oct 200531 Dec 2008


  • RA0421 Public health. Hygiene. Preventive Medicine
  • digital health
  • mHealth
  • wellbeing
  • prevention
  • chronic disease
  • validation
  • evaluation
  • diet
  • lifestyle
  • physical activity
  • epidemiology
  • study design
  • data analysis
  • technology
  • apps
  • wearables
  • dietary assessment
  • interdisciplinary
  • transdisciplinary
  • quantitative research

Fingerprint Fingerprint is based on mining the text of the person's scientific documents to create an index of weighted terms, which defines the key subjects of each individual researcher.

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Network Recent external collaboration on country level. Dive into details by clicking on the dots.

Research Output 2002 2017

DIET@NET Best practice guidelines for dietary assessment in health research

Cade, J. E., Warthon-Medina, M., Albar, S., Alwan, N. A., Ness, A., Roe, M., Wark, P. A., Greathead, K., Burley, V. J., Finglas, P., Johnson, L., Page, P., Roberts, K., Steer, T., Hooson, J., Greenwood, D. C. & Robinson, S. 5 Jun 2017 p. 102

Research output: Contribution to conferenceAbstract

1 Citations

Fiber intake modulates the association of alcohol intake with breast cancer

Romieu, I. , Ferrari, P. , Chajès, V. , de Batlle, J. , Biessy, C. , Scoccianti, C. , Dossus, L. , Christine Boutron, M. , Bastide, N. , Overvad, K. , Olsen, A. , Tjønneland, A. , Kaaks, R. , Boeing, H. , Trichopoulou, A. , Lagiou, P. , Trichopoulos, D. , Palli, D. , Sieri, S. , Tumino, R. & 25 others Vineis, P., Panico, S., Bueno-de-Mesquita, H. B., Gils, C. H., Peeters, P. H., Lund, E., Skeie, G., Weiderpass, E., Ramón Quirós, J., Chirlaque, M. D., Ardanaz, E., Sánchez, M. J., Duell, E. J., Amiano Etxezarreta, P., Borgquist, S., Hallmans, G., Johansson, I., Maria Nilsson, L., Khaw, K. T., Wareham, N., Key, T. J., Travis, R. C., Murphy, N., Wark, P. A. & Riboli, E. 15 Jan 2017 In : International Journal of Cancer. 140, 2, p. 316-321 6 p.

Research output: Contribution to journalArticle

Breast Neoplasms
Dietary Fiber
Life Style
Mobile phones
Application programs

Measured adiposity in relation to head and neck cancer risk in the European Prospective Investigation into Cancer and Nutrition

Ward, H. A. , Wark, P. A. , Muller, D. C. , Steffen, A. , Johansson, M. , Norat, T. , Gunter, M. J. , Overvad, K. , Dahm, C. C. , Halkjær, J. , Tjønneland, A. , Boutron-Ruault, M-C. , Fagherazzi, G. , Mesrine, S. , Brennan, P. , Freisling, H. , Li, K. , Kaaks, R. , Trichopoulou, A. , Lagiou, P. & 24 others Panico, S., Grioni, S., Tumino, R., Vineis, P., Palli, D., Peeters, P. H. M., Bueno-de-Mesquita, H. B., Weiderpass, E., Agudo, A., Ramon Quiros, J., Larrañaga, N., Ardanaz, E., Huerta, J. M., Sánchez, M-J., Laurell, G., Johansson, I., Westin, U., Wallstrom, P., Bradbury, K. E., Wareham, N. J., Khaw, K-T., Pearson, C., Boeing, H. & Riboli, E. 9 Feb 2017 In : Cancer Epidemiology Biomarkers and Prevention. 26, 6, p. 895-904 10 p.

Research output: Contribution to journalArticle

Head and Neck Neoplasms
Waist-Hip Ratio
Waist Circumference
1 Citations

Mediterranean diet and risk of pancreatic cancer in the European Prospective Investigation into Cancer and Nutrition cohort

Molina-Montes, E. , Sánchez, M. J. , Buckland, G. , Bueno-De-Mesquita, H. B. , Weiderpass, E. , Amiano, P. , Wark, P. A. , Kühn, T. , Katzke, V. , Huerta, J. M. , Ardanaz, E. , Quirós, J. R. , Affret, A. , His, M. , Boutron-Ruault, M. C. , Peeters, P. H. , Ye, W. , Sund, M. , Boeing, H. , Iqbal, K. & 23 others Ohlsson, B., Sonestedt, E., Tjønneland, A., Petersen, K. E. N., Travis, R. C., Skeie, G., Agnoli, C., Panico, S., Palli, D., Tumino, R., Sacerdote, C., Freisling, H., Huybrechts, I., Overvad, K., Trichopoulou, A., Bamia, C., Vasilopoulou, E., Wareham, N., Khaw, K. T., Cross, A. J., Ward, H. A., Riboli, E. & Duell, E. J. 14 Mar 2017 In : British Journal of Cancer. 116, 6, p. 811-820 10 p.

Research output: Contribution to journalArticle

Mediterranean Diet
Pancreatic Neoplasms
Confidence Intervals

Activities 2015 2017

Faculty of Business and Law annual Internal Research Conference 2017

Wark, P. (Panel Member)
29 Jun 2017

Activity: Participation in conference

Nutrition Journal (Journal)

Wark, P. (Associate Editor)
23 Mar 2017 → …

Activity: Editorial activity

Healthcare Leader Forum

Wark, P. (Invited Speaker)
5 Oct 201727 Nov 2017

Activity: Participation in workshop, seminar, course

1st GetAMoveOn Symposium

Wark, P. (Participant)
24 May 201725 May 2017

Activity: Participation in conference

mHealth Conference 2017

Wark, P. (Participant)
15 Jun 2017

Activity: Participation in conference