Overview
Profile summary
I am an Associate Professor of Human Nutrition and Physiology, with experience across academic institutions in Spain, Australia, and the United Kingdom. Currently, I teach across multiple programmes in the Faculty of Health, including the BSc (Hons) Dietetics, MDiet (Hons) Dietetics, MSc (Hons) Human Nutrition, and BSc (Hons) Nutrition, Exercise, and Health.
For the past 20 years, my research has focused on the role of diet and physical exercise on nitric oxide metabolism and cardiovascular health. More recently, my interest has expanded to the oral microbiome, particularly exploring how oral bacteria can influence nitric oxide bioavailability and cardiovascular outcomes. I co-lead the Oral Microbiome Research Group alongside Dr Zoe Brookes and am a member of the Dietetics, Human Nutrition, and Health Research Group. I am also involved in research on agricultural practices within the Controlled Environment Agriculture Research Group and the Sustainable Food Production Research Group.
Professional memberships
Fellow of the Higher Education Academy (recognition reference number: PR098846)
Fellow of the Physiological Society (Membership 137026)
Supervised research degrees
Current students:
Lauren Hallewell (PhD), Integrating the dietitian into the dental practice to address childhood body weight and oral health (with Patricia Casas-Agustench, Zoe Brookes and Robert Witton)
Mimoza Cana-Bishop (PhD), Investigating the effect of different mouthwashes on oral health and the microbiome (with Zoe Brookes and Robert Witton)
Geraldine Goldsmith (PhD), Investigating the effect of cooling interventions on heat sensitivity in patients with multiple sclerosis (with Luke Connelly and Jenny Freeman)
Samantha Harvey (PhD), Establishing the effect of microplastic and nanoplastic exposure on inflammatory bowel disease (with Nathaniel Clark and Lee Hutt)
Former students:
Lisa du Toit (PhD), Investigating the link between the oral microbiome and cardiovascular health regarding nitrate/nitrite metabolism (with Zoe Brookes and Mary Hickson) (2025)
Amazon Doble (PhD), The potential for diagnosing high blood pressure at the dentist: an examination of periodontal disease and the oral microbiome (with Zoe Brookes and Robert Witton) (2025)
Craig Clarke (PhD), The role of oral nitrate reducing bacteria in cardiovascular health: impacts of diet and exercise (with Mary Hickson and Desley White) (2025)
Ann Ashworth (PhD), Effects of dietary nitrate from vegetables on blood pressure in healthy humans (2019)
Scott Betteridge (PhD), The role of nitrates in skeletal muscle metabolism during contraction (2015) (with Glenn McConell)
Teaching interests
Currently, I lead the following modules:
- Pathophysiology (DIET501), BSc (Hons) Dietetics
- Applied sports nutrition (HNUT703), MSc in Human Nutrition
I also support teaching and marking in the following modules:
- Physiology and Genetics (DIET414, BSc [Hons] Dietetics)
- Physiology and Immunology (DIET509, BSc [Hons] Dietetics)
- Project design (DIET605, BSc [Hons] Dietetics)
- Dissertation (DIET609, BSc [Hons] Dietetics) (ADV716, MSc [Hons] Human Nutrition)
- Nutritional science 2 (BHCS2025, BSc [Hons] Nutrition, Exercise and Health)
- Applying evidence to practice (ADV702, MSc [Hons] in Human Nutrition)
- Project design for research (ADV715), MSc [Hons] in Human Nutrition)
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
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SDG 2 Zero Hunger
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Collaborations and top research areas from the last five years
Research output
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A Pilot Study Assessing the Oral Microbiome in Women of Menopausal Age: Do Oral Nitrate–Reducing Bacteria Play a Role?
Muddiman, K., Doble, A., Stephen, A., Bescos Garcia, R., Illsley, C., Nicholas, T., Hanks, S., du Toit, L. & Brookes, Z., Jun 2026, In: International Dental Journal. 76, 3, 109518.Research output: Contribution to journal › Article › peer-review
Open AccessFile2 Downloads (Pure) -
Conquering today's health paradox with the power of HEAL - an expert consensus report plus research priorities and policymaker roadmap
Wirnitzer, K. C., Motevalli, M., Tanous, D. R., Drenowatz, C., Moser, M., Cramer, H., Rosemann, T., Wagner, K.-H., Michalsen, A., Knechtle, B., Fras, Z., Marques, A., Fidler Mis, N., Stanford, F. C., Schubert, C., Goswami, N., Leitzmann, C., Fredriksen, P. M., Ruedl, G. & Lima, R. A. & 38 others, , 20 Mar 2026, In: Frontiers in Public Health. 14, p. 1695757 1 p., 1695757.Research output: Contribution to journal › Article › peer-review
Open AccessFile1 Downloads (Pure) -
Influence of exercise training on nitric oxide pathways and their physiological effects
Benjamim, J., Bailey, S. J., da Silva Gonçalves, L., Burleigh, M., Siervo, M., Coggan, A. R. & Bescos, R., 1 Mar 2026, In: Redox Biology. 90, 13 p., 104041.Research output: Contribution to journal › Review article › peer-review
Open AccessFile1 Downloads (Pure) -
An update on mouthwashes: advice for dental practitioners
Brookes, Z., Bescos, R., Witton, R., Bishop, M.-C., Whawell, S. & McColl, E., 12 Sept 2025, In: British Dental Journal. 239, 5, p. 312-315 4 p.Research output: Contribution to journal › Article › peer-review
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A pilot and feasibility study investigating the abundance and activity of nitrate-reducing bacteria in women with pre-eclampsia
du Toit, L., Offiah, I., Redondo-Rio, A., Kahawita, T., Kiernan, M., Lin, Y. M., Belfield, L. A., Montagut, G., Benavente, A., Nicholas, T., Doble, A., Dikkers, R., Freeman, R., Gabaldón, T., Brookes, Z. & Bescos Garcia, R., 14 Jan 2025, In: Pregnancy Hypertension: An International Journal of Women's Cardiovascular Health. 39, 101188.Research output: Contribution to journal › Article › peer-review
Open AccessFile39 Downloads (Pure)
Media stories
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Dental clinic’s blood pressure check enables patient to receive life-saving heart treatment
amazon, A., Brookes, Z., Bescos Garcia, R. & Witton, R.
8/12/23
1 Media contribution
Media story