Professor Alexandra Johnstone

Professor Alexandra Johnstone
BSc, MSc, PhD, PGCE, RNutr

Personal Chair

Professor Alexandra Johnstone
Professor Alexandra Johnstone

Contact Details

work +44 (0)1224 438614
The University of Aberdeen Room 4.054, The Rowett Institute, University of Aberdeen, Foresterhill Health Campus, Ashgrove Road West, Aberdeen, AB25 2ZD
Web Links


I am recognized as a leading innovative UK researcher within the field of human appetite control and specifically, the role of dietary protein. Since completing my PhD in 2002, my extensive publication record (>60 peer reviewed publications with a total of 3839 citations, of which 2659 since 2010) and excellent track record in funding from RCUK and EU funding bodies has placed me in a position where I have influenced food choice in the UK through collaboration with the food industry and my ongoing knowledge transfer activities.

I think of the kitchen as my ‘laboratory’ and have set rigorous standards to maintain quality scientific protocols. Between 2009-2015 i was a workpackage lead for EU-funded NeuroFAST (Neurobiology of food addiction and stress), SATIN (Satiety Innovation) and Full4Health (food-gut-brain accross the lifecours). I am the grant holder for a RCUK Medical Research Council grant on Chrono-nutrition and co-applicant on a further two RCUK grants. 


Research Interests

My position is funded by the Scottish Government's Rural and Environment Science and Analytical Services Division (RESAS) within a Programme of Strategic Research to be delivered over 2016-2021, in relation to “Food, Health and Wellbeing’. My Scottish Government work has invetigated:

2016 – 2021    Research focus to examine the role of dietary components on appetite control influencing energy balance, in humans, to help with healthy weight control.

2010 – 2015    Research focus within Obesity and Metabolic health, to examine appetite control across the lifecourse. Published work relating to investigation of mechanisms relating to protein induced satiety and addressed safety of diets with Gut Health colleagues.

2010 – 2015    Strategic Partnership Project with the Food and Drink Industry, which examined  ‘Health impacts of sustainable ingredient selection in the food and drink industry’.  Published work on plant protein sources and linked with WWF to address sustainable healthy diets.

Within the field of appetite control, have strategic vision and expertise to lead a team to conduct controlled dietary intervention studies in human subjects, including vulnerable groups of children through to elderly. Application of food-gut-brain bio-markers and assessment of energy balance at an international level in EU and RCUK grant awards. Targeted collaboration with internal and external colleagues adds unique opportunity for advancement of knowledge through publications, to ensure inclusion in the University REF exercise. Application of research output in public engagement and knowledge exchange with a variety of stakeholders (including policy, public, media and food sectors).

Current Research

I successfully lead and manage high calibre research activities within the Rowett Institute. I am actively engaged in organising and delivering teaching excellence and learning and I translate my team’s innovative science to a range of stakeholders achieving high impact, through sustained knowledge exchange activities, and having real commercial and community benefit. 

I initiate, organise and co-ordinate multi-disciplinary team projects within the Rowett Institute, Nationally and Internationally, leading to the submission of successful major grant proposals to EU and UK funding bodies (MRC, BBSRC, CSO), as Grant Holder and Co-Applicant. The impact of this is to promote a multi-disciplinary research strategy within the Institute, and with external collaborators, both within the College of Medicine and international colleagues. This approach strengthens research output and quality.

I plan and implement the strategic vision for whole-body obesity research for the Scottish Government grant award. 



Knowledge transfer: I was awarded the Principal’s award for Public Engagement in 2016, in recognition for my varied and continued commitment to engagement with stakeholders including the general public, policy, food industry, science and media. I contributed an Impact Case for the 2014 REF exercise



My own innovative science strategy has led to highly productive collaboration with Rowett gut health colleagues resulting in several highly cited 4* publications. I have an extensive publication record (>60 peer reviewed publications with a total of 3115 citations) with a total H index of 27.

Research Grants

  • 2010–2015 NeuroFAST –explored the stress and eating behavior, to provide new data from human studies that is needed to inform health policy initiatives (local post-doc and two research assistants) (Scott & 410165664, Stress and eating behaviour: implications for obesity. Obes Facts. 2012;5(2):277-87).
  • 2011-2016 Full4Health – explored the FOOD-GUT-BRAIN axis across age groups (8 to 80 years), (local PhD student and post-doc) (Mercer, 410165664, Halford. Approaches to influencing food choice across the age groups: from children to the elderly. Proc Nutr Soc. 2015 May;74(2):149-57).



Teaching Responsibilities

I am Lead Educator for the Massive Online Open-Learning Course (MOOC) for University of Aberdeen Nutrition and Wellbeing Course, which has had over 60K participants since starting in 201


I am course co-ordinator for the MSc Human Nutrition and Metabolism, Assessment of Nutritional Status

Further Info

Knowledge Exchange Activities



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Page 1 of 1 Results 1 to 74 of 74

  • Green, MA, Watson, AW, Brunstrom, JM, Corfe, BM, Johnstone, A, Williams, EA & Stevenson, EJ 2020, 'Comparing supermarket loyalty card data with traditional diet survey data for understanding how protein is purchased and consumed in older adults for the UK, 2014-16', Nutrition Journal. [Online] DOI:
  • Balloccu, S, Reiter, E, Johnstone, A & Fyfe, C 2020, 'How are you? Introducing stress-based text tailoring', Paper presented at IntelLanG , Santiago de Compostela, Spain, 7/09/20 - 7/09/20.
  • Ruddick-Collins, LC, Morgan, PJ & Johnstone, AM 2020, 'Mealtime: A circadian disruptor and determinant of energy balance?', Journal of Neuroendocrinology, vol. 32, no. 7, e12886. [Online] DOI:
  • Johnstone, AM, Kelly, J, Ryan, S, Romero-Gonzalez, R, McKinnon, H, Fyfe, C, Naslund, E, Lopez-Nicolas, R, Bosscher, D, Bonnema, A, Frontela-Saseta, C, Ros-Berruezo, G, Horgan, G, Ze, X, Harrold, J, Halford, J, Gratz, SW, Duncan, SH, Shirazi-Beechey, S & Flint, HJ 2020, 'Nondigestible Carbohydrates Affect Metabolic Health and Gut Microbiota in Overweight Adults after Weight Loss', The Journal of Nutrition, vol. 150, no. 7, pp. 1859-1870. [Online] DOI:
  • Neacsu, M, Raikos, V, Benavidez-Paz, Y, Duncan, SH, Duncan, GJ, Christie, JS, Johnstone, AM & Russell, WR 2020, 'Sapogenol is a major microbial metabolite in human plasma associated with high protein soy-based diets: the relevance for functional food formulations', Foods, vol. 9, no. 4, 422. [Online] DOI:
  • Lonnie, M & Johnstone, AM 2020, 'The public health rationale for promoting plant protein as an important part of a sustainable and healthy diet', Nutrition Bulletin, vol. 45, no. 3, pp. 281-293. [Online] DOI:
  • Hopkins, M, Duarte, C, Beaulieu, K, Finlayson, G, Gibbons, C, Johnstone, A, Whybrow, S, Horgan, GW, Blundell, JE & Stubbs, RJ 2019, 'Activity energy expenditure is an independent predictor of energy intake in humans', International Journal of Obesity, vol. 43, no. 7, pp. 1466–1474. [Online] DOI:
  • Hopkins, M, Finlayson, G, Duarte, C, Gibbons, C, Johnstone, AM, Whybrow, S, Horgan, GW, Blundell, JE & Stubbs, RJ 2019, 'Biological and psychological mediators of the relationships between fat mass, fat-free mass and energy intake', International Journal of Obesity, vol. 43, pp. 233-242. [Online] DOI:
  • Gratz, SW, Hazim, S, Richardson, AJ, Scobbie, L, Johnstone, AM, Fyfe, C, Holtrop, G, Lobley, GE & Russell, WR 2019, 'Dietary carbohydrate rather than protein intake drives colonic microbial fermentation during weight loss', European Journal of Nutrition, vol. 58, no. 3, pp. 1147-1158. [Online] DOI:
  • Donaldson, AIC, Smith, TO, Alder, S, Johnstone, AM, de Roos, B, Aucott, LS, Gordon, AL & Myint, PK 2019, 'Effect of nonmeat, high-protein supplementation on quality of life and clinical outcomes in older residents of care homes: a systematic review and meta-analysis', Nutrition Reviews, vol. 77, no. 2, pp. 116-127. [Online] DOI:
  • Partridge, D, Lloyd, KA, Rhodes, JM, Walker, AW, Johnstone, AM & Campbell, BJ 2019, 'Food additives: Assessing the impact of exposure to permitted emulsifiers on bowel and metabolic health – introducing the FADiets study', Nutrition Bulletin, vol. 44, no. 4, pp. 329-349. [Online] DOI:
  • McBey, D, Watts, D & Johnstone, AM 2019, 'Nudging, formulating new products, and the lifecourse: a qualitative assessment of the viability of three methods for reducing Scottish meat consumption for health, ethical, and environmental reasons', Appetite, vol. 142, 104349. [Online] DOI:
  • Donaldson, A, Johnstone, A & Myint, P 2019, 'Optimising Nutrition and Hydration in Care Homes: Getting It Right in Person Rather than in Policy', Geriatrics, vol. 4, no. 1, 1. [Online] DOI:
  • Buckley, CM, Austin, S, Corfe, BM, Green, MA, Johnstone, AM, Stevenson, EJ, Williams, EA & Brunstrom, JM 2019, 'Protein Valuation in Food Choice Is Positively Associated with Lean Mass in Older Adults', The Journal of Nutrition, vol. 149, no. 11, pp. 2056-2064. [Online] DOI:
  • Johnstone, AM, Donaldson, AIC, Scott, KP & Myint, PK 2019, 'The Ageing Gut-Brain Study: Exploring the role of the gut microbiota in dementia', Nutrition Bulletin, vol. 44, no. 2, pp. 145-153. [Online] DOI:
  • Johnstone, AM, Donaldson, AIC & Ageing Gut Brain (Age-GB) Study Team 2018, 'Care Home Research: Future Challenges and Opportunities', Geriatrics, vol. 4, no. 1, 2. [Online] DOI:
  • Charbonnier, L, van Meer, F, Johnstone, AM, Crabtree, D, Buosi, W, Manios, Y, Androutsos, O, Giannopoulou, A, Viergever, MA, Smeets, PAM & Full4Health consortium 2018, 'Effects of hunger state on the brain responses to food cues across the life span', Neuroimage, vol. 171, pp. 246-255. [Online] DOI:
  • Stevenson, EJ, Watson, AW, Brunstrom, JM, Corfe, BM, Green, MA, Johnstone, AM & Williams, EA 2018, 'Protein for Life: Towards a focussed dietary framework for healthy ageing', Nutrition Bulletin, vol. 43, no. 1, pp. 97-102. [Online] DOI:
  • Lonnie, M, Hooker, E, Brunstrom, JM, Corfe, BM, Green, MA, Watson, AW, Williams, EA, Stevenson, EJ, Penson, S & Johnstone, AM 2018, 'Protein for Life: Review of Optimal Protein Intake, Sustainable Dietary Sources and the Effect on Appetite in Ageing Adults', Nutrients, vol. 10, no. 3, 360. [Online] DOI:
  • Donaldson, AIC, Johnstone, AM, de Roos, B & Myint, PK 2018, 'Role of protein in healthy ageing', European Journal of Integrative Medicine, vol. 23, pp. 32-36. [Online] DOI:
  • Ruddick-Collins, LC, Johnston, JD, Morgan, PJ & Johnstone, AM 2018, 'The Big Breakfast Study: Chrono-nutrition influence on energy expenditure and bodyweight', Nutrition Bulletin, vol. 43, no. 2, pp. 174-183. [Online] DOI:
  • Donaldson, AIC, de Roos, B, Johnstone, AM & Myint, PK 2016, 'Is life longer with a box of chocolates?', Heart, vol. 102, no. 13, pp. 990-991. [Online] DOI:
  • López-Nicolás, R, Marzorati, M, Scarabottolo, L, Halford, JCG, Johnstone, AM, Frontela-Saseta, C, Sanmartín, AM, Ros-Berruezo, G & Harrold, JA 2016, 'Satiety Innovations: Food Products to Assist Consumers with Weight Loss, Evidence on the Role of Satiety in Healthy Eating: Overview and In Vitro Approximation', Current Obesity Reports, vol. 5, no. 1, pp. 97-105. [Online] DOI:
  • Mercer, JG, Johnstone, A & Halford, JCG 2015, 'Approaches to influencing food choice across the age groups: from children to the elderly', Proceedings of the Nutrition Society, vol. 74, no. 02, pp. 149-157. [Online] DOI:
  • Buosi, W, Bremner, DM, Horgan, GW, Fyfe, CL & Johnstone, AM 2015, 'Effect of High-Protein Breakfast Meals on Within-Day Appetite and Food Intake in Healthy Men and Women', Food and Nutrition Sciences, vol. 6, no. 3, pp. 386-390. [Online] DOI:
  • Johnstone, A 2015, 'Fasting for weight loss: An effective strategy or latest dieting trend?', International Journal of Obesity, vol. 39, no. 5, pp. 727-733. [Online] DOI:
  • Gratz, S, Russell, WR & Johnstone, A 2015, High protein weight loss diets – their impact on appetite and intestinal health. in M Hudson (ed.), Protein Diets: Nutritional Sources, Health Benefits and Intake Recommendations. Nutrition and Diet Research Progress, Nova Science Publishers Inc, pp. 31-49.
  • Siervo, M, Faber, P, Lara, J, Gibney, ER, Milne, E, Ritz, P, Lobley, GE, Elia, M, Stubbs, RJ & Johnstone, AM 2015, 'Imposed rate and extent of weight loss in obese men and adaptive changes in resting and total energy expenditure', Metabolism, vol. 64, no. 8, pp. 896-904. [Online] DOI:
  • Gratz, S, Richardson, AJ, Duncan, SH, Russell, WR, Fyfe, C, Johnstone, AM, Flint, HJ & Holtrop, G 2015, 'Influence of dietary carbohydrate and protein on colonic fermentation and endogenous formation of N-nitroso compounds', Proceedings of the Nutrition Society, vol. 74, no. OCE1, pp. E44. [Online] DOI:
  • Waiter, G, Johnstone, A, Stephen, S, McNeil, C, Murray, A, Murray, L & Philip, S 2015, 'Regional brain response to visual cues in people with diabetes to foods with high hedonic value is different: results of a pilot study', Diabetic Medicine, vol. 32, no. S1, pp. 42. [Online] DOI:
  • Lobley, G, Holtrop, G, Horgan, G, Bremner, DM, Fyfe, CL & Johnstone, A 2015, 'Responses in gut hormones and hunger to diets with either high protein or a mixture of protein plus free amino acids supplied under weight-loss conditions', British Journal of Nutrition, vol. 113, no. 8, pp. 1254-1270. [Online] DOI:
  • Lara, J, Johnstone, AM, Wells, J, Jebb, S & Siervo, M 2014, 'Accuracy of aggregate 2-and 3-component models of body composition relative to 4-component for the measurement of changes in fat mass during weight loss in overweight and obese subjects', Applied Physiology Nutrition and Metabolism / Physiologie Appliquée, Nutrition et Métabolisme, vol. 39, no. 8, pp. 871-879. [Online] DOI:
  • Neacsu, M, Fyfe, CL, Horgan, G & Johnstone, A 2014, 'Appetite control and biomarkers of satiety with vegetarian (soy) and meat-based high-protein diets for weight loss in obese men: a randomized crossover trial', The American Journal of Clinical Nutrition, vol. 100, no. 2, pp. 548-558. [Online] DOI:
  • Lobley, GE, Johnstone, AM, Fyfe, C, Horgan, GW, Holtrop, G, Bremner, DM, Broom, I, Schweiger, L & Welch, A 2014, 'Glucose uptake by the brain on chronic high-protein weight-loss diets with either moderate or low amounts of carbohydrate', British Journal of Nutrition, vol. 111, no. 4, pp. 586-597. [Online] DOI:
  • Salonen, A, Lahti, L, Salojärvi, J, Holtrop, G, Korpela, K, Duncan, SH, Date, P, Farquharson, F, Johnstone, AM, Lobley, GE, Louis, P, Flint, HJ & de Vos, WM 2014, 'Impact of diet and individual variation on intestinal microbiota composition and fermentation products in obese men', The ISME Journal, vol. 8, no. 11, pp. 2218-2230. [Online] DOI:
  • Johnstone, A, Faber, P, Gibney, ER, Lobley, G, Stubbs, R & Siervo, M 2014, 'Measurement of body composition changes during weight loss in obese men using multi-frequency bioelectrical impedance analysis and multi-compartment models', Obesity research & clinical practice, vol. 8, no. 1, pp. E46-E54. [Online] DOI:
  • Zhang, X, McGeoch, SC, Megson, IL, MacRury, SM, Johnstone, AM, Abraham, P, Pearson, DWM, De Roos, B, Holtrop, G, O'Kennedy, N & Lobley, GE 2014, 'Oat-enriched diet reduces inflammatory status assessed by circulating cell-derived microparticle concentrations in type 2 diabetes', Molecular Nutrition & Food Research, vol. 58, no. 6, pp. 1322-1332. [Online] DOI:
  • McKinnon, H, Romero Gonzalez, RPDC, Fyfe, CL, Whelan, A, Ze, X, Pesci, I, Farquharson, FM, Louis, PGH, Bosscher, D, Bonnema, A, Ryan, S, Shirazi-Beechey, SP, Harold, J, Halford, JCG, Duncan, SH, Johnstone, A, Flint, HJ & Gratz, S 2014, SATIN (Satiety Innovation) Project: Impact of type 3 resistant starch on gut microbiota and metabolites in overweight human volunteers. in ROWETT-INRA 2014 Gut Microbiology: From Sequence to Function., P143, ROWETT-INRA Gut Microbiology, Rowett Institute of Nutrition and Health, pp. 122-122, Rowett-INRA 2014 Gut Microbiology: From Sequence to Function, Aberdeen, United Kingdom, 16/06/14.
  • Mcgeoch, SC, Johnstone, AM, Lobley, GE, Adamson, J, Hickson, K, Holtrop, G, Fyfe, C, Clark, LF, Pearson, DWM, Abraham, P, Megson, IL & Macrury, SM 2013, 'A randomized crossover study to assess the effect of an oat-rich diet on glycaemic control, plasma lipids and postprandial glycaemia, inflammation and oxidative stress in Type 2 diabetes', Diabetic Medicine, vol. 30, no. 11, pp. 1314-1323. [Online] DOI:
  • Lobley, GE, Holtrop, G, Bremner, DM, Calder, AG, Milne, E & Johnstone, AM 2013, 'Impact of Short Term Consumption of Diets High in Either Non-Starch Polysaccharides or Resistant Starch in Comparison with Moderate Weight Loss on Indices of Insulin Sensitivity in Subjects with Metabolic Syndrome', Nutrients, vol. 5, no. 6, pp. 2144-2172. [Online] DOI:
  • Gratz, SW, Richardson, AJ, Fyfe, C, Johnstone, AM & Holtrop, G 2013, 'Influence of diet on colonic fermentation and endogenous formation of N-Nitroso compounds', Annals of Nutrition & Metabolism, vol. 63, no. Suppl 1, pp. 193-194.
  • Johnstone, A 2013, Protein and satiety. in J Blundell & F Bellisle (eds), Satiation, Satiety and the Control of Food Intake: Theory and Practice., 7, Woodhead Publishing Series in Food Science, Technology and Nutrition, Woodhead Publishing, pp. 128-142. [Online] DOI:
  • Johnstone, AM, Gonzalez, RR & Harrold, J 2012, 'An overview of the SATIN project', Nutrition Bulletin, vol. 37, no. 4, pp. 384-388. [Online] DOI:
  • Holtrop, G, Johnstone, AM, Fyfe, C & Gratz, SW 2012, 'Diet composition is associated with endogenous formation of N-nitroso compounds in obese men.', The Journal of Nutrition, vol. 142, no. 9, pp. 1652-1658. [Online] DOI:
  • Johnstone, A 2012, 'Safety and efficacy of high-protein diets for weight loss', Proceedings of the Nutrition Society, vol. 71, no. 2, pp. 339-349. [Online] DOI:
  • Scott, C & Johnstone, AM 2012, 'Stress and eating behaviour: implications for obesity', Obesity Facts, vol. 15, no. 2, pp. 277-287. [Online] DOI:
  • Macdiarmid, JI, Kyle, J, Horgan, GW, Loe, J, Fyfe, C, Johnstone, A & McNeill, G 2012, 'Sustainable diets for the future: can we contribute to reducing greenhouse gas emissions by eating a healthy diet?', The American Journal of Clinical Nutrition, vol. 96, no. 3, pp. 632-639. [Online] DOI:
  • McGeoch, S, Johnstone, A, Lobley, G, Pearson, DW, Abraham, P, Megson, IL & MacRury, SM 2012, 'Type 2 diabetes managed by diet and lifestyle: HbA1c can identify significant post-prandial hyperglycaemia', Practical Diabetes, vol. 29, no. 2, pp. 58-60. [Online] DOI:
  • Johnstone, AM, Lobley, GE, Horgan, GW, Bremner, DM, Fyfe, CL, Morrice, PC & Duthie, GG 2011, 'Effects of a high-protein, low-carbohydrate v. high-protein, moderate-carbohydrate weight-loss diet on antioxidant status, endothelial markers and plasma indices of the cardiometabolic profile', British Journal of Nutrition, vol. 106, no. 2, pp. 282-291. [Online] DOI:
  • McGeoch, SC, Holtrop, G, Fyfe, C, Lobley, GE, Pearson, DWM, Abraham, P, Megson, IL, Macrury, SM & Johnstone, A 2011, 'Food intake and dietary glycaemic index in free-living adults with and without type 2 diabetes mellitus', Nutrients, vol. 3, no. 6, pp. 683-693. [Online] DOI:
  • Russell, WR, Gratz, SW, Duncan, SH, Holtrop, G, Ince, J, Scobbie, L, Duncan, G, Johnstone, AM, Lobley, GE, Wallace, RJ, Duthie, GG & Flint, HJ 2011, 'High-protein, reduced-carbohydrate weight-loss diets promote metabolite profiles likely to be detrimental to colonic health', The American Journal of Clinical Nutrition, vol. 93, no. 5, pp. 1062-1072. [Online] DOI:
  • Macdiarmid, JI, Kyle, J, Horgan, GW, Loe, JE, Fyfe, C, Johnstone, A & McNeill, G 2011, Livewell: a balance of healthy and sustainable food choices. World Wildlife Fund UK.
  • Fyfe, C, Stewart, J, Murison, S, Jackson, D, Rance, K, Speakman, JR, Horgan, GW & Johnstone, A 2010, 'Evaluating energy intake measurement in free-living subjects: when to record and for how long?', Public Health Nutrition, vol. 13, no. 2, pp. 172-180. [Online] DOI:
  • Johnstone, A & Bird, S 2010, Obesity and weight loss: myths and reality. in A Johnstone & G Tsichlia (eds), Fat matters: From sociology to science. M & K Update Ltd, UK, pp. 67-85.
  • Johnstone, A 2010, 'Protein and appetite control', Food Science & Technology, vol. 24, no. 1, pp. 21-24.
  • Siervo, M, Faber, P, Gibney, ER, Lobley, G, Elia, M, Stubbs, RJ & Johnstone, A 2010, 'Use of the cellular model of body composition to describe changes in body water compartments after total fasting, very low calorie diet and low calorie diet in obese men', International Journal of Obesity, vol. 34, no. 5, pp. 908-918. [Online] DOI:
  • Gratz, SW, Richardson, AJ, Johnstone, AM, Lobley, GE, Flint, HJ & Wallace, RJ 2009, 'Effect of high-protein diets on faecal N-nitrosocompounds and genotoxicity of faecal water', Mutagenesis, vol. 24, no. 6, pp. 528. [Online] DOI:
  • Gratz, S, Duncan, S, Richardson, AJ, Johnstone, A, Lobley, GE, Flint, HJ & Wallace, RJ 2009, 'Effect of protein and carbohydrate intake on intestinal toxicity of human feces', Annals of Nutrition & Metabolism, vol. 55, no. Suppl. 1, OR03-1, pp. 80. [Online] DOI:
  • Gratz, S, Duncan, SH, Richardson, AJ, Johnstone, AM, Lobley, GE, Flint, HJ & Wallace, RJ 2009, 'High protein diets impact on microbial metabolites and toxicity in the human large intestine', Microbial Ecology, vol. 57, no. 3, pp. 572-573. [Online] DOI:
  • Johnstone, A 2009, 'High-protein diets for appetite control and weight loss : the 'holy grail' of dieting?', British Journal of Nutrition, vol. 101, no. 12, pp. 1729-1730. [Online] DOI:
  • Jebb, SA, Johnstone, AM, Warren, J, Goldberg, GR & Bluck, L 2009, Key methodologies in obesity research and practice. in G Williams & G Fruhbeck (eds), Obesity: science to practice. Wiley-Blackwell , London, pp. 45-78. [Online] DOI:
  • Johnstone, A 2009, Workplace interventions for obesity: A review of the literature. Workplace Weight Team, Edinburgh, United Kingdom.
  • Johnstone, A, Stewart, AD, Benson, PJ, Kalafati, M, Rectenwald, L & Horgan, G 2008, 'Assessment of body image in obesity using a digital morphing technique', Journal of Human Nutrition and Dietetics, vol. 21, no. 3, pp. 256-267. [Online] DOI:
  • Johnstone, A, Welch, A, Horgan, GW, Fyfe, C, Broom, I, Bremner, D & Lobley, G 2008, 'Central control of appetite during ketogenic weight loss diets: a positron emission tomography study', International Journal of Obesity, vol. 32, no. Supplement 1, pp. S24-S24.
  • Johnstone, AM, Horgan, GW, Murison, SD, Bremner, DM & Lobley, GE 2008, 'Effects of a high-protein ketogenic diet on hunger, appetite, and weight loss in obese men feeding ad libitum', The American Journal of Clinical Nutrition, vol. 87, no. 1, pp. 44-55. <> [Online] DOI:
  • Johnstone, A & Visockiene, Z 2008, 'Energy requirement: Factors that influence variation in basal metabolic rate', CAB Reviews: Perspectives in Agriculture, Veterinary Science, Nutrition and Natural Resources, vol. 3, no. 061, pp. 1-8.
  • Duncan, SH, Lobley, G, Holtrop, G, Ince, J, Johnstone, A, Louis, P & Flint, HJ 2008, 'Human colonic microbiota associated with diet, obesity and weight loss', International Journal of Obesity, vol. 32, no. 11, pp. 1720-1724. [Online] DOI:
  • Speakman, JR, Rance, KA & Johnstone, A 2008, 'Polymorphisms of the FTO gene are associated with variation in energy intake, but not energy expenditure', Obesity, vol. 16, no. 8, pp. 1961-1965. [Online] DOI:
  • Whybrow, S, Hughes, D, Ritz, P, Johnstone, A, Horgan, GW, King, N, Blundell, JE & Stubbs, RJ 2008, 'The effect of an incremental increase in exercise on appetite, eating behaviour and energy balance in lean men and women feeding ad libitum', British Journal of Nutrition, vol. 100, no. 5, pp. 1109-1115. [Online] DOI:
  • Lobley, G, Bremner, D, Holtrop, G, Johnstone, A & Maloney, C 2007, 'Impact of high-protein diets with either moderate or low carbohydrate on weight loss, body composition, blood pressure and glucose tolerance in rats', British Journal of Nutrition, vol. 97, no. 6, pp. 1099-1108. [Online] DOI:
  • Johnstone, A, Murison, S, Bremner, D, Horgan, GW & Lobley, G 2006, 'Hunger and appetite response to a high-protein ketogenic diet in obese men feeding ad libitum', Proceedings of the Nutrition Society, vol. 65, no. Suppl., pp. 90A.
  • Hoggard, N, Johnstone, A, Faber, P, Gibney, ER, Elia, M, Lobley, G, Rayner, V, Horgan, G, Hunter, L, Bashir, S & Stubbs, R 2004, 'Plasma concentrations of alpha-MSH, AgRP and leptin in lean and obese men and their relationship to differing states of energy balance perturbation', Clinical Endocrinology, vol. 61, no. 1, pp. 31-9. [Online] DOI:
  • Faber, P, Johnstone, A, Gibney, ER, Elia, M, Stubbs, RJ, Roger, PL, Milne, E, Buchan, W & Lobley, G 2003, 'The effect of rate and extent of weight loss on urea salvage in obese male subjects', British Journal of Nutrition, vol. 90, no. 1, pp. 221-231. [Online] DOI:
  • Faber, P, Johnstone, A, Gibney, ER, Elia, M, Stubbs, RJ, Duthie, GG, Calder, AG & Lobley, G 2002, 'The effect of rate of weight loss on erythrocyte glutathione concentration and synthesis in healthy obese men', Clinical Science, vol. 102, no. 5, pp. 569-577. [Online] DOI:
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