Who We Are

Sandra Mikhail
Founder & Director of Nutrition A-Z

"The Gut Health Dietitian making poo talk salon-chic"

Sandra Mikhail is an internationally-known accredited practising dietitian, author and the founder and director of Nutrition A-Z. She holds a Bachelor of Nutrition and Dietetics(Monash University, Australia), a Master of Advanced Studies in Nutrition and Health (ETHZ) and is a member of Dietitians Australia. She also holds a Sports Nutrition Diploma by the International Olympic Committee (IOC). Being a globe-trotting dietitian, she has extensive experience in clinical practice, nutrition consulting and health promotion, working in Australia, the UAE and Switzerland.

Her main areas of specialty are digestive disease, sports nutrition, eating disorders and corporate health working with popular brands and partners such as the Swiss football club FCZ, She's Mercedes,Johnson & Johnson, Thomson Reuters and Adobe to name a few. As a mental health advocate, her workshops and articles on stress and nutrition have gained popularity internationally where she was personally invited by Arianna Huffington to contribute to her global platform Thrive and has appeared on CNN to talk about nutrition and stress in the workplace. Sandra is also the author of "The Gut Chronicles", which is now available worldwide as well as the co-host of the podcast The Gastroenterologist and His Daughter.

Areas of expertise: Gut health and digestive disease / Food allergies and intolerance / Sports nutrition / Eating disorders

Languages: English, Arabic, Conversational German and French

For speaking and media enquiries, please contact katie@readmaxwell.co.uk

Your Team at Nutrition A-Z

Qualified nutritionists and dietitians that will work with your reality to nourish your body, mind, movement and sleep.

Viviana Bucci

Certified Nutritionist

Areas of expertise: Weight management / Premenstrual syndrome/ Perimenopause / Menopause / Women's health (PCOS, Endometriosis, fertility...)

Languages: German, English, Italian

Viviana started her career as a nutritional coach and then continued her studies at Apamed Fachschule in Jona where she obtained her diploma as a certified nutritionist. She has a passion women's health nutrition and has made this her focus throughout her education and career.

Viviana holistic approach encourages all her clients to develop sustainable dietary changes, which includes addressing themes such as: sleep, hormonal factors, stress management and fatigue. Having suffered from high stress levels, fatigue and burn out herself, Viviana knows how these topics can negatively impact one's quality of life. She is therefore driven by the belief that every imbalance is unique and requires an individual and targeted strategy to achieve long-lasting change and balance.

Viviana uses evidence-based practice to help women navigate challenges related to nutrition and hormonal imbalances throughout every phase of life.

Her qualifications include: Graduated as a nutrition coach (Benedict Schule Zürich)
Training in medical science (Apamed Fachschule) / Cert. Nutritionist - Practitioner (Apamed Fachschule)
Henriette Saevil

Clinical Nutritionist

Areas of expertise: Weight management / Stress and Burnout / Sports nutrition
Lifestyle change / Digestive health / Neurology

Languages: English, German, Norwegian

Henriette Saevil is an international clinical nutritionist, who has been studying and practicing in many different countries. Norway is her place of birth. She holds a Bachelor of Science in Nutrition and Health from University of Roehampton London, and a Master of Science in Clinical Nutrition from University of Copenhagen, where she wrote the thesis was "How does depression status and sleep duration affect weight loss six months after bariatric surgery?"

She has experience from hospitals and clinics in Norway, Denmark, the UK and Switzerland. Henriette is also a certified sports nutritionist, completing her sports nutrition diploma by the International Olympic Committee's (IOC).

Apart from consulting at Nutrition A-Z, Henriette is also the Head of Clinical Nutrition at Cereneo, which focuses on neuro-rehabilitation.

Henriette's qualifications include: Master of Science Clinical Nutrition, Denmark / Bachelor of Science Nutrition and Health, UK / Registered nutritionist in Norway and Denmark / Accredited by the ErfahrungsMedizinischesRegister (EMR) Switzerland.
Katia Tassiou

Content Creator and Dietitian

Areas of expertise: Sports nutrition / Weight management / Metabolic diseases / Renal disease / Content creation & social media management / Scientific research

Languages: Greek, English and German

Katia Tassiou is Nutrition A-Z's dietitian and content creator who was born and raised in Greece but studied and lived in several places in Europe before ending up in Switzerland in 2020. Always inclined towards clinical nutrition, she wrote her Sports Nutrion Master’s thesis on "Intradialytic protein ingestion and its combination with exercise in chronic haemodialysis patients".

Her experience has seen her work in private practice, in the food industry as well as in clinical settings in Greece and Switzerland. Apart from consulting at Nutrition A-Z, Katia is currently a Clinical Nutritionist at Cereneo, which focuses on neuro-rehabilitation. She holds additional experience in hospitality, sales, advertisement, promotion and social media management.

Katia's qualifications include: Bachelor of Science in Nutrition & Dietetics, Greece / Master of Science in Human Movement Sciences: Sports & Nutrition, Netherlands. She’s is a registered Nutritionist and Dietitian in Greece and soon to be recognised as Dimplomierte Ernährungsberaterin by the Schweizerisches Rotes Kreuz.
Our Partners: Training and Diagnostics

Offering cutting edge health and sports assessments
Training and Diagnostics provide state-of-the-art health assessments, enhancing our ability to customise nutrition plans to a whole new level.

The most sought out assessments include:

The DEXA/ DXA scan, which is the gold standard body composition scan:
- Determination of whole body and segmental fat mass, android/gynoid fat, total and segmental lean mass, whole body bone mineral density, visceral and subcutaneous fat)
VO2max test. What is it? VO2max, is your body's oxygen capacity during intense exercise. If you've ever wondered about your endurance levels, VO2max holds the answer. Why does it matter?
- Fitness Check: VO2max shows how fit you are, guiding your workout routine.
- Health Hint: It hints at heart health. Monitoring changes might help you catch any issues early.
- Goal Power: Set fitness targets based on your VO2max to stay motivated.
- Tailored Training: Athlete or not, train smart with VO2max insights
You can book an appointment as a client of ours via their website below.
Our Partners: Walk-in-Labor (CH) and YDL (Dubai)

Offering appointments for blood laboratory analyses

Whether you are based in Zurich, Switzerland or in Dubai (the UAE), you can get a thorough blood work panel done either through our Nutrition A-Z Executive Check up or Nutrition A-Z's Female Health Check up panel. These are thorough blood work panels to assess your overall health including levels of energy nutrients, those related to immune function and heart health as well as hormone levels.

You can book an appointment directly via their respective websites and ask for the panels mentioned above.

Book an appointment with your specialist

Our Health and Medical Network

Keeping to our highest standards of care, we have partnered up and work closely with renown doctors, specialists and therapists that cater to your health with an integrative approach in Switzerland and in the UAE.

Prof. Dr. med. Stephan Vavricka

Specialist Gastroenterologist and Hepatologist
Facharzt für Innere Medizin und Gastroenterologie FMH Spez. Hepatologie
Dr. med. Martin Wilhelmi

Specialist Gastroenterologist and Hepatologist
Facharzt FMH für Gastroenterologie und Hepatologie
Dr. med. Roger Wanner

Specialist Gastroenterologist and Internist
Facharzt für Gastroenterologie FMH, Facharzt Allgemeine Innere Medizin FMH & DGVS Zertifikat Ernährungsmedizin in der Gastroenterologie
Dr. med. Tina Bernardi

FMH Gynaecology and Obstetrics
FMH Gynäkologie und Geburtshilfe
Dr. Wagdy Mikhail

Specialist Gastroenterologist and Hepatologist (Dubai, UAE)
Dr. Scott (Matthew) Watson

Specialist in general internal medicine
Katharina Gundermann

Women's health physiotherapist & personal Trainer
Lea Nydegger - Founder of ent-spannt

Medical massage & Relaxation Therapies

Sandra MikhailFounder & Director of Nutrition A-Z

Sandra Mikhail
Founder & Director of Nutrition A-Z