We use a root cause approach to understanding the why of your health problem and co-create a program to fix.
Wellgevity Principles
We ..
see the whole human
are objective & data driven
measure change
are effective and work alongside you to reach your goals
are driven by safe science and explain our reasoning
support you to change unhelpful habits which incrementally damage your health
We won’t ..
compromise long term health for short term gain
prefer “bio-hacking” instead we promote bio-harmony
prescribe fad diets
make promises we cannot keep
Meet the Wellgevity Team
Founder and Medical Director
Applying the science and art of longevity to practice. Dr Tamsin is a medical doctor qualified with honours from King's College London and Guys and St Thomas’ HospitalS.
Tamsin has a BSc in Neuroscience and the Biology of Ageing and specialist training in psychiatry and sports medicine with further education in nutritional and functional medicine.
Dr Tam is a member of The Royal College of Psychiatrists (MRCPsych) and founding trustee of the British Society for Lifestyle Medicine.
Additionally serves on the advisory board of Humanity.Health, a health-tech company democratising proactive consumer healthcare.
Dr Tam is part of the founding team and medical director of RoseBar Longevity with The Six Senses.
As a former GB elite triathlete and Ironman Triathlon Champion, she developed a performance and possibility mindset which informs her approach to optimal health management and human potential. Immersed in a world of sporting and coaching excellence, this triggered a fundamental shift in how one can measure true health both in the present and as a predictive trajectory - our ‘healthspan’. Dr Tam’s background in psychiatry allows her to incorporate a nuanced humanistic approach to practice, behaviour change being pivotal to health outcomes.
Specific interests are longevity practices - bio-identical hormone therapies, bio-modulators/peptides and strategic exercise, techniques and supplements which research shows us improves health-span.
She has a deep knowledge of digital health and use of wearable tech driving connected health and personal empowerment. More recently, learning from Dr Robin Carhart-Harris at Imperial College, (and related experts) , Dr Tam has become interested in the neuroscience research and practical therapeutic use of psychedelic compounds.
Dr Tamsin Lewis
Nutritional Therapist & Health Coach
Trained in Naturopathic Nutrition and Certified as a Health Coach, Charlotte is passionate about nutritional, hormonal and lifestyle medicine principles which underpin our wellbeing and enhances longevity Charlotte sits on the science advisory board for Wellgevity and is our Brand Director.
Charlotte has closely worked with Dr Tam since 2015 and has broad practical experience.
Charlotte personalises protocols with targeted personalised nutrition whilst supporting sustainable behaviour change. She utilises systemic coaching to support in the domains of fuelling, meal timing, sleep, movement, stress resilience, gut health and hormone balancing . Thus cohesively building longevity.
Qualifications : PGDIP BSC Hons.
Charlotte May
Dr Olivia Lesslar
Medical Doctor
Dr Olivia Ly Lesslar is an Australian doctor with expertise in psychoneuroimmunology and complex chronic conditions including neurodegeneration, "mystery illnesses", allergy, and cancer.
The intersection of psychology, hormones, the nervous system, and the immune system is her particular passion, speaking regularly on podcasts, and at conventions and seminars.
After medical residency in Australia, she worked across the the USA. First with double-board certified neurologist and psychiatrist Dr Jay Lombard at the Neuroimmunology Associates of New York and now, with Dr Chris Renna at LifeSpan Medicine. Olivia also works in her home country, Australia with internationally renowned Professors Charlie Teo and Pete Smith (neurosurgery and immunology).
Longevity Doctor
Meet Dr. Charlie – A Trailblazer in Longevity Medicine at Wellgevity, who is renowned for his innovative approach and profound dedication to the science of longevity medicine. Having spent over a decade in intensive care medicine, witnessing firsthand the challenges faced when people become critically ill, Dr. Charlie has been driven to lead in preventative healthcare. His focus is on reversing the ageing process, enhancing disease resistance, and boosting overall resilience.
At the heart of Dr. Charlie’s practice is a deeply personalised approach, tailoring each programme to meet individual needs. He excels in demystifying the complexities of longevity science, employing precise care models, advanced lifestyle interventions, and biomarker-driven supplementation, all targeted at the fundamental aspects of ageing. His commitment to continuous learning and staying at the forefront of research ensures that his methods are based on the latest scientific insights.
Understanding the intrinsic link between physical and psychological health, Dr. Charlie’s holistic approach also prioritises motivational factors and mental wellbeing. His dedication to ongoing education is exemplified by his recent year of mentorship under Dr. Tam, during which he immersed himself in learning her pioneering methodologies. This experience has further refined his approach to patient care, blending Dr. Tam’s innovative practices with his unique insights.
Beyond his professional achievements, Dr. Charlie is passionate about mountain medicine and endurance activities, holding a diploma in the former. His adventurous spirit has led him to significant challenges, such as summiting Mount Elbrus and running the Marathon des Sables - reflecting his personal commitment to pushing boundaries.
Dr. Charlie’s blend of rigorous training, dedication to research, and personal experiences makes him a distinctive voice in longevity medicine. His work is marked by an unwavering commitment to his patients, ensuring that Wellgevity remains at the cutting edge of healthcare and that thriving becomes the standard for our patients.
Dr Charlie Cox
Medical Doctor/GP
Dr Chatterjee has extensive experience in clinical medicine as an expert generalist with a special interest in metabolic health. She qualified in 2000 from the University of Wales College of Medicine.
She focuses on solving problems with a systems, root cause approach, and tackles issues with the foundations of health and longevity in mind - nutrition, movement, connection, sleep and mindset. She is an avid proponent of de-prescribing whenever possible, using medication's judiciously.
Rini also has movement qualifications as a CrossFit(MD) Level 1 coach.
Dr Rini Chatterjee
Dr Leah Austin
Medical Doctor/GP/Naturopathic Medicine
Dr Leah Austin graduated from Newcastle University upon Tyne in 2007 and completed her GP training in 2014. Since working as a General Practitioner she has gained experience working in the North East, Yorkshire, London, UK and Beijing, China.
Working as General Practitioner within the NHS, she became frustrated with time constraints of 10 minute consultations; the ability to manage patients with longstanding (chronic) health problems and really being able to give patients the individualised assessment and care they deserved. Being of mixed ethnic background with Chinese and English, she became fascinated with eastern medicine and the true impact of nutrition, genetics, herbs, environment and lifestyle. With this and her own health/family concerns, led her to study nutrition and qualify as a Naturopathic Nutritional Therapist in September 2017 at the College of Naturopathic Medicine.
She specialises in longevity, preventative medicine, chronic health problems, digestive health, women's health & hormones, weight problems and genomics/genetics. Using a systems-oriented, 360 degree approach (lifestyle, nutrition, medical, genetic, environmental) to address her clients/patients health concerns to ultimately produce the best plan/programme and protocols.
Nurse Practitioner
Nurse Nena has been dedicated in providing care and integrative wellness since graduating as a nurse. Nena is a friendly face that often visits Wellgevity patients for phlebotomy services and to administer IV’s in the comfort of their own home.
Detail-oriented with over ten years of experience in drawing blood and assisting in administering life medicine treatments. Nena is committed in delivering personalised care at the highest standard to help clients achieve optimal vitality and longevity.
Her passion in leading and promoting a healthy and balanced lifestyle complements her professional skill set and profile for our team.
Qualifications: Nursing Diploma, Cannulation, Phlebotomy.
Nena Klimenta
Elle provides the fabric which weaves Wellgevity together. Passionate about effective client care.
Prior to joining Wellgevity in 2016, Elle spent her years working at client service relation company with managing and administrative roles. And later moved to Germania Technik working with executives that provides support to all business units including administrative, financial and human resource departments. Her background as BSN.Registered nurse enabled her competence within Wellgevity medical organisation.
Elle Baessler
Operations
With a first class degree in economics, Vanessa joined the Wellgevity team in 2019, following a career in the investment banking industry where she worked in a number of trading, sales and relationship management roles at both JPMorgan and Bank of New York Mellon.
Being a keen netball player, coach and club manager as well as sports enthusiast, she is motivated to integrate her health and fitness lifestyle objectives with her finance and business management capabilities at Wellgevity to help others achieve optimal health.
Vanessa Westlake
Finance and Operations
“I’ve been seeing Dr Tam for five years now. Her depth of knowledge of cutting edge treatments, boundless compassion and her individualised approach - particularly around women’s health - is second to none. She really listens, really cares, and has been relentless in getting to the root of my complete adrenal burnout and complex hormonal issues.
I feel incredibly fortunate to have found her. ”
Our Science Advisory Board
Advisory & collaboration team
Dr Tamsin works with an exceptional global network of some of the most progressive, scientific and intellectual clinicians and researchers.
