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Dr Duane Mellor - Aston University. Birmingham, , GB

Dr Duane Mellor Dr Duane Mellor

Lead Nutrition and Evidence Based Medicine | Aston University


Clinical Dietitian and Researcher. Looking to improve understanding of the science of nutrition and eating well.







Vegan diets and supplementation The role of low calorie sweeteners in the diet of people with diabetes Low calorie sweeteners’ role in the dietary recommendations for people with diabetes - Duane Mellor Medical education and diet




Duane Mellor is a registered dietitian who is the Aston Medical School lead for Nutrition and Evidence Based Medicine. Having a background in clinical dietetics supporting people living with diabetes he moved into medical education when joining Aston University. He is also the Associate Dean for Education (Quality Enhancement) in the College of Health and Life Sciences. where he works to support innovative teaching practice alongside engaging students as fellow professionals on the first steps of their careers.
After initially working in the areas of clinical trials, Duane's current research interests focus on improving nutrition and health by working with communities to celebrate their heritage through food and help tackle barriers resulting from societal inequalities. Alongside this Duane has a keen interest in science communication and developing scientifically accurate messages to help individuals make informed decisions about their own food choices and health.

Areas of Expertise (5)

Food Science





Education (4)

University of Hull: PhD, Diabetes and Endocrinology 2013

Investigating the Cardiovascular Benefits of Chocolate in Type 2 Diabetes

Bishop Grosseteste College: PGCE, Education 2005

University of Lincoln: PG Dip, Healthcare Practice 2004

University of Surrey: BSc, Nutrition and Dietetics 1997


Affiliations (8)

  • Diabetes UK Nutrition Working Group
  • British Dietetic Association Diabetes Special Interest Group committee
  • Visitor (Dietetics) Health Care and Professions Council
  • Associate Editor - Journal of Human Nutrition and Dietetics
  • Editorial Group - British Dietetic Association - Healthier You
  • British Dietetic Association - Diabetes Specialist Interest Group
  • NNedPro
  • Interprofessional Group and Nutrition Curriculum for Undergraduate Medical Training

Media Appearances (7)

Is inflammation the link between dementia, cancer and coronavirus? Doctors hope knowledge gained from tackling Covid-19 could revolutionise the way they treat chronic conditions

The Daily Mail  online


Dr Duane Mellor, a senior lecturer at Aston University and expert on diabetes, says the epidemic of fatty liver disease in Britain is caused by excess energy from a poor, sugar-laden diet being stored as fat in the liver, and a lack of access to outdoor space for people to exercise.

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Six raisons pour lesquelles les pommes de terre sont bonnes pour la santé

The Conversation  online


Translation of English version by Conversation Canada 'L’humble' pomme de terre a une mauvaise réputation. Cet aliment de base bon marché autrefois présent dans le régime alimentaire de nombreux pays a été qualifié ces dernières années d’aliment 'malsain' à éviter.

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Fast and processed food 'can cause damaging inflammation' in the human body

The Irish News  online


Dietitian Duane Mellor says ‘ultra-processed food' can leave the body struggling to convert the extra calories into energy, generating high levels of free radicals, molecules thought to be involved in triggering inflammation.

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Eating Chili Peppers Cuts Risk Of Death From Heart Attack And Stroke, Study Says

CBS Boston  online


Duane Mellor, a registered dietitian and senior teaching fellow at Aston Medical School in the UK, said the paper is “interesting” but “does not show a causal link” between chili consumption and health benefits.

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Avoiding red or processed meat doesn't seem to give health benefits

New Scientist  online


Duane Mellor, a spokesperson for the British Dietetic Association, says people shouldn’t take the advice as a green light to eat more red meat. “What it doesn’t say is that we can tear up the guidelines and start eating twice as much meat. But red meat three times a week is not a problem.”

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Reverse dieting: slowly increasing calories won’t prevent weight regain – but may have other benefits

The Conversation  online


While there are many debates about which type of diet is best for weight loss and health, it’s often not the weight loss which is the biggest challenge, but rather avoiding weight regain afterwards. This can lead to cycles of dieting and weight gain, or “yo-yo” dieting, which can cause people to have a less healthy relationship with food, worse mental health and a higher body weight. But recently, “reverse dieting” has gained popularity online as a post-diet eating plan that claims it can help you avoid weight regain by eating more. In simple terms, it’s a controlled and gradual way of increasing from a low calorie weight-loss eating plan back to your more “normal” pre-diet way of eating.

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Sugary drinks may raise bowel cancer risk, claims major US study

Guardian  online


Duane Mellor, a dietitian at Aston University, said that while reducing sugary drink intake might lower the risk of bowel cancer, it may have little effect without also improving lifestyle and overall diet.

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Articles (5)

A Review of the Potential Health Benefits of Low Alcohol and Alcohol-Free Beer: Effects of Ingredients and Craft Brewing Processes on Potentially Bioactive Metabolites


Duane D Mellor, Bishoy Hanna-Khalil, Raymond Carson


Beer is a beverage of significant historical and cultural importance. Interest in the potential health effects of alcoholic beverages has largely focused on wine; however, there are a number of potentially beneficial bioactives that beer may contain that warrant further investigation. The challenge of considering any potential health benefits of beer are restricted by the negative consequences of its alcohol and energy content. There is potential to enhance the bioactive qualities of beer whilst reducing the alcohol and energy content through novel brewing approaches often used in craft brewing, in terms of ingredients, brewing methods and type of fermentation. Consumer demand to produce a greater variety of beer types, including alcohol-free beers, may also help to increase the number of beers which may have greater potential to improve health, with lower levels of alcohol, while still being tasty products. As low alcohol, prebiotic and bioactive containing beers are developed, it is important that their potential health benefits and risks are fully assessed.

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The effects of Prickly Pear fruit and cladode (Opuntia spp.) consumption on blood lipids: A systematic review

Complementary Therapies in Medicine

Caroline Gouws, Reza Mortazavi, Duane Mellor, Andrew Mc Kune, Nenad Naumovski


The current dietary recommendations for cardiovascular disease (CVD) risk reduction include increased fruit and vegetable consumption. The Opuntia spp., Prickly Pear (PP) fruit is rich in dietary fiber and may have lipid-lowering effects but it is often confused with the PP stem/leaf (Cladode (CLD)), or not identified. The efficacy of the PP fruit and CLD in reducing CVD risk is a growing area of research.

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The Effect of L-Theanine Incorporated in a Functional Food Product (Mango Sorbet) on Physiological Responses in Healthy Males: A Pilot Randomised Controlled Trial


Jackson Williams, Andrew J McKune, Ekavi N Georgousopoulou, Jane Kellett, Nathan M D’Cunha, Domenico Sergi, Duane Mellor, Nenad Naumovski


Consumption of L-Theanine (L-THE) has been associated with a sensation of relaxation, as well as a reduction of stress. However, these physiological responses have yet to be elucidated in humans where L-THE is compared alongside food or as a functional ingredient within the food matrix. The aim of this study was to determine the physiological responses of a single intake of a potential functional food product (mango sorbet) containing L-THE (ms-L-THE; 200 mgw/w) in comparison to a flavour and colour-matched placebo (ms). Eighteen healthy male participants were recruited in this randomised, double-blind, placebo-controlled trial. The participants were required to consume ms-L-THE or placebo and their blood pressure (BP) (systolic and diastolic), heart rate (HR), and heart rate variability (HRV) were monitored continuously over 90 minutes. Eleven males (age 27.7 ± 10.8 years) completed the study. Changes in area under the curve for systolic and diastolic blood pressure and HRV over the 90 minute observation period indicated no differences between the three conditions (all p > 0.05) or within individual groups (all p > 0.05). The values for heart rate were also not different in the placebo group (p = 0.996) and treatment group (p = 0.066), while there was a difference seen at the baseline (p = 0.003). Based on the findings of this study, L-THE incorporated in a food matrix (mango sorbet) demonstrated no reduction in BP or HR and showed no significant parasympathetic interaction as determined by HRV high-frequency band and low-frequency/high-frequency ratio. Further studies should be focussed towards the comparison of pure L-THE and incorporation within the food matrix to warrant recommendations of L-THE alongside food consumption.

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Assessing the diet quality of individuals with rheumatic conditions: a cross-sectional study

Rheumatology International

Thomas Carter, Nathan M. D’Cunha, Ekavi N. Georgousopoulou, Stephen Isbel, Rebecca Davey, Duane D. Mellor, Jane Kellett, Andrew J. McKune & Nenad Naumovski


Arthritis is a significant cause of chronic pain and disability, affecting around 3.5 million Australians. However, little is known regarding the overall diet quality of those living with arthritis. This study aimed to assess the dietary quality of Australians living in the Australian Capital Territory region with arthritis. This cross-sectional study analysed dietary intake data of individuals living with arthritis using a validated food frequency questionnaire. Dietary quality was assessed using the Healthy Eating Index-2015 (HEI-2015) to examine associations between diet composition, age, income and arthritis impact using the short form of the Arthritis Impact Measurement Scales 2 (AIMS2-SF). Participants, predominantly female (82.6%), were grouped by age: 18–50 years (n = 32), 50–64 years (n = 31), and 65 + years (n = 23). Significant correlations were observed between age and HEI-2015 (rs = 0.337, p = 0.002) and income and AIMS2-SF (rs = − 0.353, p 

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Expert consensus on low-calorie sweeteners: facts, research gaps and suggested actions

Nutrition Research Reviews

Margaret Ashwell, Sigrid Gibson, France Bellisle, Judith Buttriss, Adam Drewnowski, Marc Fantino, Alison M Gallagher, Kees de Graaf, Séverine Goscinny, Charlotte A Hardman, Hugo Laviada-Molina, Rebeca López-García, Berna Magnuson, Duane Mellor, Peter J Rogers, Ian Rowland, Wendy Russell, John L Sievenpiper, Carlo la Vecchia


A consensus workshop on low-calorie sweeteners (LCS) was held in November 2018 where seventeen experts (the panel) discussed three themes identified as key to the science and policy of LCS: (1) weight management and glucose control; (2) consumption, safety and perception; (3) nutrition policy. The aims were to identify the reliable facts on LCS, suggest research gaps and propose future actions. The panel agreed that the safety of LCS is demonstrated by a substantial body of evidence reviewed by regulatory experts and current levels of consumption, even for high users, are within agreed safety margins. However, better risk communication is needed. More emphasis is required on the role of LCS in helping individuals reduce their sugar and energy intake, which is a public health priority. Based on reviews of clinical evidence to date, the panel concluded that LCS can be beneficial for weight management when they are used to replace sugar in products consumed in the diet (without energy substitution). The available evidence suggests no grounds for concerns about adverse effects of LCS on sweet preference, appetite or glucose control; indeed, LCS may improve diabetic control and dietary compliance. Regarding effects on the human gut microbiota, data are limited and do not provide adequate evidence that LCS affect gut health at doses relevant to human use. The panel identified research priorities, including collation of the totality of evidence on LCS and body weight control, monitoring and modelling of LCS intakes, impacts on sugar reduction and diet quality and developing effective communication strategies to foster informed choice. There is also a need to reconcile policy discrepancies between organisations and reduce regulatory hurdles that impede low-energy product development and reformulation.

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