Professor Kelechi Nnoaham

Professor Kelechi Nnoaham

Honorary Professor

Faculty of Health

Kelechi qualified with a medical degree from the University of Lagos, Nigeria in 1999, and worked until September 2003 in general medicine and infectious diseases in different settings – rural/urban, deprived/affluent. During study for an MSc in Tropical Medicine & International Health (with Distinction) at the London School of Hygiene and Tropical Medicine, he won the Frederick-Murgatroyd prize for academic excellence. In the period that followed, Kelechi’s research on experiences of stigma amongst African migrants living with tuberculosis in East London received international recognition for its findings on health system-related diagnostic delays. He later studied for an MPH in Global Health Science (with Distinction) at Oxford University and followed that up with a PhD in Public Health & Epidemiology at Oxford University in 2011. For his PhD, Kelechi set up a primary study in 19 clinical centres across 13 countries in 5 continents, collecting and analysing data on chronic pelvic pain in women undergoing surgical evaluation for a possible diagnosis of endometriosis. This research formed the basis for development of a clinical tool for symptom-based prediction of a surgical diagnosis of endometriosis and was a feature video article in the Fertility and Sterility journal during 2011.

Kelechi’s subsequent Public Health career has seen him hold posts in the National Health Service and Local Government - Consultant in Public health in NHS Berkshire West (2009-2013) and Service Director for Public Health & then Interim Director of Public Health in Bristol City Council (2013-2014). From April 2014 until October 2016, Kelechi was Director of Public Health in Plymouth City Council. Joining the organisation at a time of uncertainty for the public health system, Kelechi brought dynamic leadership of the population health agenda for the council and the City. He and his team developed the ‘4-4-54’ construct and Thrive Plymouth programme which set out a clear and focused strategy for population health in the city. This became well embedded in the city’s strategic plan until 2036 (The Plymouth Plan), providing a compelling vision around which partners, communities and institutions in the city could rally. Kelechi has since March 2015 held an Honorary Professorship in Public Health and Epidemiology at Plymouth University. 


Since November 2016, Kelechi has been Executive Director of Public Health in Cwm Taf University Health Board, South Wales. In addition, he is the Executive Lead for Research & Development, Innovation, Improvement and Transformation in the Health Board. In those roles, he has been developing the Improvement Faculty for the Health Board, leading the organisation's Value-Based Health agenda and steering academic and strategic links with academic institutions and industry for Innovation. Kelechi works with a dynamic team of Public Health, Healthcare Improvement and Innovation professionals who are setting out and implementing a system-wide approach to wellbeing based on strong foundations of population health management, prevention, population health research, knowledge mobilisation and collaborative working with communities.

Kelechi is has recently been elected co-chair of the South West Global Health Collaboration. He aspires to continue making notable contributions to global health practice, research, training and education through deploying the core principles of public health in any setting where the need and opportunities exist.

Teaching interests

Kelechi currently teaches the on following programmes:

Global Health Masters - University of Plymouth - Global Health Needs Assessment, Prioritisation and Evaluation

Masters in Public Health - University of South Wales - Epidemiology 

Masters in Public Health - Cardiff University - Health Economics, Policy and Practice 

Undergraduate Medial Teaching - Cardiff University - Health Inequalities

Research interests

Women's Health

Chronic Disease Epidemiology 

Predictive Modelling 

Population Segmentation and Risk Stratification 

Infectious diseases 


1.   Reprint of: Impact of endometriosis on quality of life and work productivity: a multicenter study across ten countries. Nnoaham KE, Hummelshoj L, Webster P, d'Hooghe T, de Cicco Nardone F, de Cicco Nardone C, Jenkinson C, Kennedy SH, Zondervan KT; World Endometriosis Research Foundation Global Study of Women's Health consortium. Fertil Steril. 2019 Oct;112(4S1):e137-e152. doi: 10.1016/j.fertnstert.2019.08.082. No abstract available.


2.   Knowledge of fruits and vegetables, consumption pattern and associated factors among adults in Lagos State, Nigeria. Olatona FA, Sosanya, A, Sholeye OO, Obrutu OE, Nnoaham KE. African Journals Online Vol 6, No 2 (2018)


3.   Dietary habits and metabolic risk factors for non-communicable diseases in a university undergraduate population. Olatona FA, Onabanjo OO, Ugbaja RN, Nnoaham KE, Adelekan DA. J Health Popul Nutr. 2018 Aug 16;37(1):21. doi: 10.1186/s41043-018-0152-2.


4.   Vitamin D and tuberculosis: review and association in three rural provinces of Afghanistan. Sarin P, Duffy J, Mughal Z, Hedayat E, Manaseki-Holland S. Int J Tuberc Lung Dis. 2016 Mar;20(3):383-8. doi: 10.5588/ijtld.15.0303. Review.


5.   Effects of Health-Related Food Taxes and Subsidies on Mortality from Diet-Related Disease in New Zealand: An Econometric-Epidemiologic Modelling Study. Ni Mhurchu C, Eyles H, Genc M, Scarborough P, Rayner M, Mizdrak A, Nnoaham K, Blakely T. PLoS One. 2015 Jul 8;10(7):e0128477. doi: 10.1371/journal.pone.0128477. eCollection 2015.


6.   Endometriosis and associated symptoms among Nigerian women. Fawole AO, Bello FA, Ogunbode O, Odukogbe AT, Nkwocha GC, Nnoaham KE, Zondervan KT, Akintan A, Abdus-Salam RA, Okunlola MA. Int J Gynaecol Obstet. 2015 Aug;130(2):190-4. doi: 10.1016/j.ijgo.2015.02.030. Epub 2015 Apr 24.


7.   Systematic review and meta-analysis of the effect of increased vegetable and fruit consumption on body weight and energy intake. Mytton OT, Nnoaham K, Eyles H, Scarborough P, Ni Mhurchu C. BMC Public Health. 2014 Aug 28;14:886. doi: 10.1186/1471-2458-14-886. Erratum in: BMC Public Health. 2017 Aug 17;17 (1):662.


8.   The influence of global heating on discretionary physical activity: an important and overlooked consequence of climate change. Stamatakis E, Nnoaham K, Foster C, Scarborough P. J Phys Act Health. 2013 Aug;10(6):765-8. No abstract available.


9.   Anthropometrically determined nutritional status of children in public and private primary schools in Lagos, Nigeria. Olatona FA, Adewale AE, Sekoni OO, Goodman 00, Nnoaham KE. African Journals Online Vol 13, No 2 (2013)


10. Potential cardiovascular mortality reductions with stricter food policies in the United Kingdom of Great Britain and Northern Ireland. O Flaherty M, Flores-Mateo G, Nnoaham K, Lloyd-Williams F, Capewell S. Bull World Health Organ. 2012 Jul 1;90(7):522-31. doi: 10.2471/BLT.11.092643. Epub 2012 Apr 12.


11. Is early age at menarche a risk factor for endometriosis? A systematic review and meta-analysis of case-control studies. Nnoaham KE, Webster P, Kumbang J, Kennedy SH, Zondervan KT. Fertil Steril. 2012 Sep;98(3):702-712.e6. doi: 10.1016/j.fertnstert.2012.05.035. Epub 2012 Jun 22. Review.


12. Developing symptom-based predictive models of endometriosis as a clinical screening tool: results from a multicenter study. Nnoaham KE, Hummelshoj L, Kennedy SH, Jenkinson C, Zondervan KT; World Endometriosis Research Foundation Women's Health Symptom Survey Consortium. Fertil Steril. 2012 Sep;98(3):692-701.e5. doi: 10.1016/j.fertnstert.2012.04.022. Epub 2012 May 30.


13. Impact of endometriosis on quality of life and work productivity: a multicenter study across ten countries. Nnoaham KE, Hummelshoj L, Webster P, d'Hooghe T, de Cicco Nardone F, de Cicco Nardone C, Jenkinson C, Kennedy SH, Zondervan KT; World Endometriosis Research Foundation Global Study of Women's Health consortium. Fertil Steril. 2011 Aug;96(2):366-373.e8. doi: 10.1016/j.fertnstert.2011.05.090. Epub 2011 Jun 30.


14. Modelling the impact of a healthy diet on cardiovascular disease and cancer mortality. Scarborough P, Nnoaham KE, Clarke D, Capewell S, Rayner M. J Epidemiol Community Health. 2012 May;66(5):420-6. doi: 10.1136/jech.2010.114520. Epub 2010 Dec 15.


15. Do geodemographic typologies explain variations in uptake in colorectal cancer screening? An assessment using routine screening data in the south of England. Nnoaham KE, Frater A, Roderick P, Moon G, Halloran S. J Public Health (Oxf). 2010 Dec;32(4):572-81. doi: 10.1093/pubmed/fdq025. Epub 2010 Apr 21.


16. Modelling income group differences in the health and economic impacts of targeted food taxes and subsidies. Nnoaham KE, Sacks G, Rayner M, Mytton O, Gray A. Int J Epidemiol. 2009 Oct;38(5):1324-33. doi: 10.1093/ije/dyp214. Epub 2009 May 29.


17. MULTI-CENTRE STUDIES OF THE GLOBAL IMPACT OF ENDOMETRIOSIS AND THE PREDICTIVE VALUE OF ASSOCIATED SYMPTOMS. Nnoaham KE, Sivananthan S, Hummelshoj L, Jenkinson C, Webster P, Kennedy SH, Zondervan KT. J Endometr. 2009;1(1):36-45.


18. Transcutaneous electrical nerve stimulation (TENS) for chronic pain. Nnoaham KE, Kumbang J. Cochrane Database Syst Rev. 2008 Jul 16;(3):CD003222. doi: 10.1002/14651858.CD003222.pub2. Review. Update in: Cochrane Database Syst Rev. 2014;7:CD003222.


19. Modelling future capacity needs and spending on colonoscopy in the English bowel cancer screening programme. Nnoaham KE, Lines C. Gut. 2008 Sep;57(9):1238-45. doi: 10.1136/gut.2007.146050. Epub 2008 Apr 25.


20. Low serum vitamin D levels and tuberculosis: a systematic review and meta-analysis. Nnoaham KE, Clarke A. Int J Epidemiol. 2008 Feb;37(1):113-9. doi: 10.1093/ije/dym247. Review.


21. A handwashing intervention in a low income community in the developing world reduced disease incidence in children. Nnoaham KE. Evid Based Med. 2006 Jun;11(3):88. No abstract available.


22. Perceptions and experiences of tuberculosis among African patients attending a tuberculosis clinic in London. Nnoaham KE, Pool R, Bothamley G, Grant AD. Int J Tuberc Lung Dis. 2006 Sep;10(9):1013-7.


23. European subsidies and developing countries. Nnoaham KE. BMJ. 2005 Dec 17;331(7530):1475-6. No abstract available.


24. Damage v ability to cope shapes need for disaster aid. Nnoaham KE. BMJ. 2005 Jul 2;331(7507):49. No abstract available.


25. Who needs health care? Preventive medicine deserves more respect. Nnoaham KE. BMJ. 2005 Jun 4;330(7503):1331. No abstract available.