Our Experts

James is a published scientist, author, and speaker in the field of exercise and nutrition. He has published research in prestigious scientific journals, including the American Journal of Clinical Nutrition and the Journal of Applied Physiology. In his previous lay publication, Weightology Weekly, he wrote over 70 articles per year covering the latest science in a manner that was friendly and easy to understand. James is also the former science editor for Pure Power Magazine, and the former editor for Journal of Pure Power, both publications that delivered scientific, but lay-friendly, information on training and nutrition to athletes and coaches. In addition, James has given over 75 lectures on fitness-related topics to physicians, dietitians, and other professionals, and has been a speaker at major events such as the AFPT Conference and NSCA Personal Training Conference. In fact, James has been involved in the health, nutrition, and fitness field for over 20 years, and has written over 500 articles. He is a strong believer in an evidence-based, scientific approach to body transformation and health.

Ursula is a consultant Dietitian and Senior Lecturer specialising in eating disorders, disordered eating, mental health and weight management. She has a clinic for eating problems in Leeds, UK and features regularly on media. She has published and presented on a range of topics relating to Dietetics and eating disorders; specialising in producing guidelines, pathways and consensus statements.

She is currently a member of the NICE Guidelines Development Group for Eating Disorders, NHS England -Clinical Advisory Group for Eating disorders, British Dietetic Association’s Mental Health Group and Quality Eating Disorders standards group.

After earning a BS in biochemistry at the University of Virginia, Stephan completed a PhD in neuroscience at the University of Washington, then went on to study the neuroscience of obesity and eating behaviour as a postdoctoral fellow. Spending a total of 12 years in the neuroscience research world studying neurodegenerative disease and the neuroscience of body fatness. His publications in scientific journals have been cited more than 2,100 times by his peers.

Today, he continues his mission to advance science and public health as a researcher, science consultant, and science communicator. His book, The Hungry Brain, was released in February of 2017 and was named one of the best books of the year by Publishers Weekly and called “essential” by the New York Times Book Review. He is a Senior Fellow at GiveWell and scientific reviewer for the Examine.com Research Digest. Past clients include the Open Philanthropy Project. He is also the primary designer of an innovative course-based body weight management program called the Ideal Weight Program, which is part of the HumanOS platform. He periodically contributes to the scientific literature and is a review editor at Frontiers in Nutrition.

He lives in the Seattle area, where he grows much of his own food, uses his bicycle to get around, and brews a mean hard cider.

Megan is a Registered Dietitian with a PhD in gut health from the Faculty of Medicine and Biomedical Sciences at The University of Queensland, Australia. Megan’s PhD was recognised for its contribution to science receiving the Dean’s Award for outstanding research Higher Degree and was selected as one of nine international female success stories by Cosmopolitan.

Megan has a broad range of nutrition experience having worked as a clinical dietitian specialising in gut health; sports nutritionist for the Australia Olympic Synchronised Swimming team; and consultant dietitian to several companies, from well established to start-ups.

Megan leads research at King’s College London investigating nutrition-based therapies in gastrointestinal health, including pre- & probiotics, dietary fibres, the low FODMAP diet and food additives. Megan is also an Associate Lecturer at the University of Queensland, and was the recipient of the 2017 British Medical Journal Open Gastroenterology prize ‘Best Clinical science abstract for oral presentation’ and the British Nutrition Foundation ‘Drummond Pump Priming Award’.

Megan is passionate about the food industry and is working with Leon Restaurants on a gut health initiative across the UK and Europe. Megan also leads a specialist gut health clinic on Harley Street London with ROC private and was recognised as one of six new “wellness stars” to watch in 2017 by Women’s Health UK.

Rachel is a clinically trained dietitian, certified food, exercise and substance addiction therapist and has been voted one of the top 10 exercise trainers in the world. An Iron(wo)man, powerlifting champion of Europe, lead Dietitian to the British Army, blogger, vlogger, presenter, traveller, researcher, geek, foodie, lover of all things science and a very proud mummy.

Her purpose is to combine her skills and over a decade of experience in dietetics, exercise training and therapy with the latest evidence-based research to support her client’s self-empowerment; to liberate clients from the internal storms that limit their growth, to motivate them to transform their body and mind, and to help them heal from shame and the negative thoughts that rule their head about their looks, body, and being.

Spencer is a board-certified Family Medicine Physician and a Diplomate of the American Board of Obesity Medicine. His love for lifestyle as medicine began in athletics where he worked hard using exercise and nutrition science to propel himself in football and wrestling. After wrestling at UNC Chapel Hill as the Tar Heel heavyweight and earning a degree in exercise science, he headed to medical school.

During medical school, Spencer attended multiple obesity medicine conferences and realized that he wanted to use the same nutrition and exercise information he learned for athletics but now for the general population and health. After medical school, he attended VCU’s Riverside Family Medicine Residency in Newport News to hone his skills. He is now practicing online via SteadyMD pioneering a new delivery of medicine.

Sarah is Head of Nutrition at Mac-Nutrition and one of the lead tutors on Mac-Nutrition Uni. She has a BSc from Loughborough University and an MSc in Sport and Exercise Nutrition from Leeds Metropolitan University. Sarah has previously worked as a nutrition and health advisor at the University of East Anglia, as well as a performance nutritionist for the Carnegie Institute for Sports Performance and Wellbeing where she supported a wide variety of both professional and amateur athletes. Sarah is also qualified kinanthropometrist and, before joining Mac-Nutrition, worked as part of the Powerade Sports Science team for 4 years supporting athletes with their nutritional preparations for events.

Combining her in-depth knowledge of exercise physiology and nutrition with an evidence- based approach, Sarah has been working as a health and performance nutritionist at Mac- Nutrition for the last 6 years. She has worked with hundreds of clients and athletes over the past decade, and her extensive work in delivering bespoke nutrition advice and 1-2-1 nutrition support has bolstered her most recent position as a lead tutor on Mac-Nutrition Uni, the world’s first ever 12-month, evidence-based, online nutrition course.

Danny is the founder of Sigma Nutrition and the main man behind content creation on the site. Known for hosting the top-ranked podcast Sigma Nutrition Radio, Danny is also a respected educator in the field. He has spoken at conferences and events all over Europe including London, Dublin, Amsterdam and Vienna.

Danny has a master’s degree (MSc.) in Nutritional Sciences from University College Cork, during which time Danny completed his research thesis directly under the world-renowned vitamin D researcher Professor Kevin Cashman.

In addition to that research, Danny took classes in biochemistry, clinical nutrition, micronutrient interactions and physiology. Previous to this Danny also completed a BSc. Degree in Biology and Physics Education and spent a year teaching these subjects.

As well as producing media content, Danny also works as a performance nutritionist to professional MMA fighters, professional boxers and competitive powerlifters. He has consulted several teams in a number of sports. He also has an online coaching service that helps a wide array of clients with nutrition-related issues.

Outside of the nutrition world, Danny is a drug-free powerlifter, BJJ blue belt and a life-long Arsenal fan.

Trent is a former track and field athlete who competed in the NCAA for Cornell University where he was selected as a co-captain. He also competed in the CIS for the University of Guelph, where he twice earned All-Canadian status.

Trent was an academically decorated student who made the Dean’s list at Cornell University and was twice awarded Academic All-Canadian status during the years 2001 and 2002. In 2006 he took a position in Switzerland for the Nestle Research Centre (Powerbar) as a Senior Research Scientist in Sport Nutrition, Energy and Performance. Trent has also served as the Nutrition and Physiology Consultant for Athletics Canada.

He and his wife Hilary (Olympic 1500m runner), recently relocated to Victoria, BC where he accepted the position of Senior Physiologist working with the Canadian Sport Centre Pacific.

Cathy is a communications specialist, with the last 12 years of her 32-year police career, seeing her trained and deployed as a hostage and crisis negotiator. Not only was Cathy deployed frequently as a negotiator but hs also managed a national team and had responsibility for training and developing negotiation techniques. To say her communication skills are enhanced is an understatement and since completing her police service, Cathy has brought a powerful package of communication skills to our world.

Cathy runs her own business, The Art of Communication, sharing powerful and effective communication skills to fitness and health professionals. She has delivered workshops, communication master classes and courses to numerous organisations including Lift The Bar, Good Health and Fitness, Dundee University, The Royal College of Surgeons and Edinburgh Dental Education Centre to name but a few! Cathy shares her skills in a lighthearted and engaging way and truly helps bring life and simplicity to communication.

Martin is a clinical performance nutritionist, motivational speaker, educator and CEO of The Mac-Nutrition Collective, a syndicate of companies dedicated to the furthering and promotion of evidence-based nutrition.

Previously a university lecturer and practitioner, his work turned to consultancy with organisations, teams and governing bodies such as Universal Pictures, Derby County FC and British Weight Lifting. Now, his nutrition consultancy Mac-Nutrition (www.Mac-Nutrition.com), is the UK’s leading consultancy for nutrition advice, providing innovative and expert advice on optimal health, clinical issues, weight loss, sports performance, and workplace wellness. His nutrition qualification, Mac-Nutrition Uni (www.Mac-NutritionUni.com), has quickly become the industry standard; it is the world’s first ever 12-month, evidence-based, online nutrition course that can be completed alongside full-time work, from anywhere in the world! Finally, Martin’s professional mentoring platform (www.mac-nutritionmentoringlab.com), is designed to support the business, knowledge and practice of health and fitness professionals. The remainder of Martin’s time is spent delivering expert guest lectures nationally and internationally.

Having previously been a Registered Nutritionist with the Association for Nutrition, holding a BSc in Sport and Exercise Science and postgraduates in Sports Nutrition and Clinical Nutrition. His online persona has become synonymous with unwavering endeavours to promote integrity and bring evidence-based practice to the forefront of the industry.

Fran is the co-founder and director of a dozen eggs, a branding and design company based in Loughborough.  She specialises in creating strategies and brands that allow a variety of companies to form strong identities, giving them a firm footing in their chosen market.

Fran also teaches on Loughborough University’s Visual Communication degree programme.  She has written the Branding Pathway course, on which she is a tutor.

Laura is a UK Registered Dietitian and health writer. With over ten years of experience in nutrition science, Laura is passionate about helping people improve their health by making practical changes to their diet.

Laura is also passionate about how the food we eat makes us feel, think and live! She wants to engage people in food and nutrition, to bridge the gap between what goes on our plates – and how that affects our bodies.

With experience in creating engaging, expert content across digital and print media, she aims to inform, educate and inspire action by translating science into manageable, meaningful content.

Her specialist interests include weight management and mindful eating, digestive health and sports nutrition. She is currently studying the International Olympic Committee Diploma in Sports Nutrition, and is trained to deliver the LOW FODMAP diet, a new and effective elimination diet for the management of irritable bowel syndrome.

Sukh is the founder of OnlineFitnessBusiness.com, a training company that specialises in helping professionals in the fitness industry develop online businesses. Sukh is an experienced entrepreneur and director with experience in a number of sectors from retail to legal services for landlords and everything in between, but focuses the majority of his time helping personal trainers and nutrition coaches market sell and deliver their services online so that they can help more people, earn more money and make more of an impact doing the work that they love.

Prior to the launch of OnlineFitnessBusiness.com, Sukh began his career in the fitness industry as a personal trainer before opening gyms in the North West of England and then delivering nutrition and training services to clients online across the UK and then abroad through his company Project Lean. OnlineFitnessBusiness.com has now worked directly with over 400 health and fitness professionals and aims to improve standards for them and the people they can help.

Kathryn is registered with the ACCA (Association of Chartered Certified Accountants) and is the Director and Owner of Halfpenny Accountancy Hub Limited.

She is an Astute Senior Finance Professional and Chartered Accountant with over 21 years experience working in a multi-business environment across a wide range of industries.  Kathryn has worked with companies & individuals ranging from small start-ups to large organisations with turnovers in excess of £79 Million.

Kathryn does not see herself as just an accountant to the businesses she works with, she is a trusted business partner, and as such strives to ensure that she provides the best advice and business tools to help support each business/Individual to grow and succeed.

Ultimately, Kathryn’s goal is to take the stress of accounting away from her clients so that they are able to concentrate solely on what’s most important, the running of their business.

Rob is a psychologist with over 20 years of experience of developing people. He speaks at conferences internationally, runs workshops and provides one-to-one coaching. His corporate clients include: BBC, British Airways, HSBC and KPMG.

He has a doctorate in psychology from King’s College London. He is a chartered psychologist and Associate Fellow of the British Psychological Society. Based on his academic background, he has established a reputation for recommending interventions that are backed by scientific evidence.

He is the author of over 20 books on topics such as confidence, influence and persuasion, high achievement and behaviour change. His books include How To Stand Out: Proven Tactics for Getting Noticed and You Can Change Your Life: Easy Steps to Getting What You Want. Several of his books have been either UK or international number one bestsellers and his books have been translated into languages including Greek, Chinese, Spanish and Arabic.

He has presented several TV shows for the BBC and is a frequent guest on both BBC and CNN news as well as a regular on radio including The Jeremy Vine Show on BBC Radio 2. He has either written for or been quoted in hundreds of publications ranging from the Financial Times, Daily Telegraph and Guardian as well as magazines including Men’s Health and Psychologies.

Chris is the owner of Lift The Bar, a Fitness Mentor and also a very proud Personal Trainer. With Lift The Bar, Chris is focused on helping other trainers get the support they need in training, nutrition, and business, in order to have a really happy career that allows them to create a world of happy clients.

Helen is a Registered Dietitian and Co-Founder of The Rooted Project, an award winning enterprise which strives to give the public what they deserve: simple, easy to understand nutrition information, rooted in science and based on facts, not fads.

Lee is a lecturer and researcher, currently working out of Deakin University in Australia.  Before moving to Australia in 2018, Lee spent 6 years at the University of Stirling School of Sport lecturing in Health and Exercise Sciences. Prior to that, Lee spent three years as a Postdoctoral Researcher at the University of Dundee, where he also completed a PhD in Molecular Exercise physiology between 2005 and 2009 and a BSc (Hons) in Sports Biomedicine between 2001 and 2005.

As a molecular exercise physiologist, Lee’s primary research interests are in understanding the molecular basis of skeletal muscle adaptations (or maladaptations) to physical activity (or inactivity) and nutrition. More specifically, he is interested in the role of kinase-phosphorylation cascades in the adaptive responses to various modes of exercise.

Steve Hall is the founder of Revive Stronger, an online coaching company and content provider. Revive Stronger combine the principles of nutrition and exercise science to personalise their coaching for their clientele. The Revive Stronger Podcast aims to spread evidence-based information to those seeking to manipulate their body composition, bringing on the foremost experts in the field.

Bojan is part Emergency Doctor, part fitness model, and part mad scientist! Alongside his medical day job. he is the head of Lambda Strength’s Sports Science division, working predominantly online with physique competitors on their nutrition and coaching.

Sarah Fuller is a specialist CAMH Eating Disorders Dietitian. She completed her undergraduate degree in Biomedical Science at Southampton University before studying a Postgraduate Diploma in Nutrition and Dietetics at the University of Wales. Sarah spent 5 years working as a Paediatric and Neonatal Dietitian and is currently an Advanced Specialist Eating Disorders Dietitian who has worked in specialist eating disorder units as well as community eating disorders teams. She has published national guidelines on working with vegan patients who have eating disorders as well as Naso Gastric Tube feeding under restraint. In 2018 Sarah also became a clinical advisor and associate trainer for BEAT, the UK’s eating disorders charity.

Chris is a GDPR (General Data Protection Regulation) certified practitioner and an IT professional with 20 years of experience, ranging from junior developer through to being the Chief Technology Officer of FTSE 250 company.

Dr. Jake Linardon (PhD) is a Psychology Lecturer and Research Fellow at Deakin University, Melbourne Australia. Jake has published over 40 peer-reviewed scientific papers, most of which are featured in world-leading psychiatry and clinical psychology journals. Jake’s research centres around evaluating a broad range of treatment and prevention programs for eating disorders. Jake currently serves on the editorial board for two academic journals, the International Journal of Eating Disorders and Body Image. He is also the founder of Break Binge Eating, an open access website designed to provide evidence-based information and self-help strategies for people with eating disorders.

Jeff has been a software engineer for over 30 years and in this time he has worked on everything including website development, development of software used by multi-billion dollar companies and researchers, mobile apps, and large databases. He is also a certified personal trainer, currently studying MNU and has worked for a time as a certified physical therapy technician. Thus he has a great interest in putting together private members areas to provide premium content and education resources to paying group members and 1-2-1 clients. He also has a passion for helping other evidence-based fitness professionals by sharing his knowledge and expertise to provide the best possible service to their clients.

Nadia Craddock is a body image researcher at the Centre for Appearance Research – an internationally recognised centre of excellence for psychological and interdisciplinary, patient-centred research in appearance, disfigurement, body image and related studies based at the University of the West of England in Bristol.

Nadia’s current work centres on developing and evaluating body image intervention tools for adolescents. As a Research Fellow on the Dove Self-Esteem Project Partnership team, Nadia is currently leading the development and evaluation of a school-based body image curriculum for adolescents in Indonesia in partnership with UNICEF. Her additional research interests include eating disorder prevention, colourism, and corporate social responsibility in relation to appearance-based stereotypes and bias.

Nadia recently completed her PhD at the Centre for Appearance Research, UWE Bristol and obtained a Master’s in Human Development and Psychology from Harvard and a BSc in Psychology (First Class Honours) from the University of Bath. She regularly speaks on panels and events, and co-hosts and produces two podcasts: Appearance Matters the Podcast and The Body Protest.

Mike T. Nelson, PhD, MSME, CSCS, CISSN, is a research fanatic who specialises in metabolic flexibility and heart rate variability, as well as an online trainer, adjunct professor, a faculty member at the Carrick Institute, presenter, creator of the Flex Diet Cert, kiteboarder, and (somewhat incongruously) heavy-metal enthusiast.  The techniques he’s developed, and the results Mike gets for his clients have been featured in international magazines, in scientific publications, and on websites across the globe.  In his free time, he enjoys spending time with his wife, lifting odd objects, reading research, and kiteboarding as much as possible.

Jay is the Co-founder of Expert Unleashed, a Brand Strategy and Marketing Consultancy created with the aim of helping coaches, speakers, trainers and knowledge-based business owners to attract their dream clients by uncovering a brand that is built on authenticity and purpose.

Having openly suffered with social anxiety up until the age of 19, Jay studied Psychology at university to gain a better understanding of why he faced this difficulty.  He then spent over 10 years in marketing helping stagnant businesses to go from struggling to thriving – such as increasing turnover from £200k to £3.5m in under 4 years as Group Marketing Director for a group of software businesses.

As well as writing and publishing his own book, The Anxious Entrepreneur, Jay has also written and spoken for leading tech brands such as Sniply and HubSpot.

He has a passion for animals – especially dogs – constantly craves food, begrudgingly enjoys the gym, hates coffee but loves hot chocolate, and is a personal development addict.

Adele is a specialist oncology dietitian with a broad experience base working across NHS, freelance, research, health-tech and charity sectors. She has special interests in the consequences of cancer treatment, diabetes & cancer, neuroendocrine tumours and pre-habilitation. She enjoys dispelling the myths around nutrition and cancer.

Dr. Oliver Witard is a Senior Lecturer in Exercise Metabolism and Nutrition at King’s College London. He is also a board member of the Nutrition Society and a member of the Royal Society of Edinburgh Young Academy of Scotland. Oliver’s research focus is protein nutrition for maximising muscle adaptation to exercise training. His publications focus on establishing the optimal dose, source and timing of dietary protein for muscle recovery and performance in athletes. Other nutrients of interest to Oliver in the context of muscle recovery include omega 3 fatty acids. Recently, Oliver has delivered several invited talks on protein/omega 3 nutrition at international industry events, including the International Whey Protein Conference in Chicago, Bioingredia Health and Nutrition Forum’s on sports nutrition (2017) and healthy ageing (2018) in G’Staad, Bridge to Food in Amsterdam, and Food Matter’s Live in London. Recent invited presentations at academic conferences include FC Barcelona’s inaugural conference for Nutrition in Football, American College of Sports Medicine in Boston, the Royal Society of Medicine conference in London and the International Sport and Exercise Nutrition Conference in Newcastle, all with the theme of protein or omega 3 nutrition for muscle recovery.

Karen O’Brien is the data executive at Nutritics. She holds a BSc Hons in Nutrition & Health Science and is currently completing an MSc in Science. Her core roles include the maintenance and expansion of food databases, data enhancement and the development and delivery of the recipe calculation course.

Rachel Cooke is the customer onboarding manager at Nutritics. She holds a BSc Hons Human Nutrition and has a background in clinical nutrition research and food law. Her core roles include engaging with customers and launching growth-oriented campaigns alongside our customer success teams.

Lloyd is a Registered Dietitian and Performance Nutritionist. After studying Sports Science at Brunel University he realised his passion was in Nutrition. He went onto to study Dietetics at Hertfordshire University and work in the NHS for 2 years as a specialist weight management Dietitian. During this time Lloyd wanted to improve himself as a practitioner so attended one of the first Mac-Nutrition mentorship weekends. From here Lloyd went on to work at Manchester City, working with both the academy and Women’s team. He has since worked with Salford Red Devils Rugby League team and Crawley Town FC. He currently works with Everton Football Clubs First team and is studying a PhD in Sports Nutrition at Liverpool John Moores University.

Sarah Dosanjh is a psychotherapist and author of the book I Can’t Stop Eating. After her own recovery from binge eating disorder, she has gone on to help thousands of other people do the same. She has appeared on various media outlets such as BBC breakfast, Sky’s Roundtable and Radio One.

Dr. Alyssa Olenick holds a Ph.D. in Exercise Physiology is a certified sports nutritionist and Crossfit Level 2 Trainer. Alyssa completed her doctoral training in exercise, metabolism, sex differences and menstrual cycle physiology. She is currently a postdoctoral research fellow researching the areas of menopause and metabolism. As a coach she specializes in the areas endurance, strength and hybrid training. She runs her online business ‘Doc Lyss Fitness’ and is a strength athlete, ultra-marathon runner, and all-around fitness lover who is passionate about educating people on science-based fitness to get them into the gyms and on the roads/trails — or often, doing both at the same time!