Doctors talking with a patient in a consultation room

    Our advisors

    Our advisors are doctors, scientists and practitioners who make sure the health advice behind our coaching holds up.

    Our advisors are health experts

    Our advisors are experts in the health dimensions that make the difference for a long and healthy life. They are doctors, scientists and practitioners, in particular in these fields:

    Preventive medicineExercise physiologyBehavioral sciencePersonal training

    All of them bring a relevant background, their own research and long practical experience in their speciality field. All of them share a healthspan and prevention mindset. Between them they teach longevity medicine, run a cancer research lab, build artificial intelligence for diagnosis, lead a preventive check-up practice, research health behavior change, and coach people who have no time to train.

    They shape coaching at 20 Years

    Our advisors complement our expertise at 20 Years. While our team's key competence lies in coaching habits, our advisors contribute specialist knowledge in the health dimensions that matter for a long and healthy life. This is what they do:

    • Challenge our method and the health recommendations we make at 20 Years
    • Review our products and publications to ensure scientific rigor
    • Co-develop our coaching and learning offers
    • Contribute to expert sessions for our 20 Years community
    • Support through 1:1 advice when a coachee wants to go deeper in a specific field

    20 Years Expert Advisors

    Samuel Baxter, MD

    Samuel Baxter, MD

    GP / Longevity Medicine · NHS United Kingdom

    Samuel is a GP in the NHS with a clinical focus on diabetes and metabolic health. He teaches and speaks on longevity medicine, and he holds a master's in medical education from Newcastle University.

    Advises us on: Prevention in everyday general practice and metabolic health

    Jonathan Harnoss, MD

    Jonathan Harnoss, MD

    Oncology / Translational Research · University Hospital Heidelberg

    Jonathan is a cancer surgeon at the University Hospital Heidelberg, where he heads the translational research group. His lab studies pancreatic cancer. Before he returned to Germany, he spent four years in cancer immunology research at Genentech in San Francisco.

    Advises us on: Cancer risk and early detection

    Sherif Mehralivand, MD

    Sherif Mehralivand, MD

    Urology / Men's Health · University Hospital Dresden

    Sherif runs his own practice for men's health and preventive medicine. He is a urologist at the University Hospital Dresden, where he leads the research group for artificial intelligence in urology, and he spent five years as a research fellow at the National Institutes of Health in Bethesda.

    Advises us on: Men's health and which screenings are worth doing at which age

    Biljana Stojcevski, MD

    Biljana Stojcevski, MD

    Cardiology / Women's Cardiovascular Health · European Prevention Center

    Biljana is lead cardiologist at the European Prevention Center in Düsseldorf, a practice built around preventive check-ups. She worked as a senior cardiologist in German hospitals for nine years, including several years leading cardiac intensive care.

    Advises us on: Heart health and the markers worth watching over a lifetime

    Steve Colling

    Steve Colling

    Behavioral Psychology / Health Behavior Change · Retireless

    Steve studied human psychology in London and health behavior change at Yale, and spent most of his career in behavioral research. He now coaches people in midlife through his own practice, Retireless.

    Advises us on: Habit psychology and building effective coaching programs

    Paul Grabarsch

    Paul Grabarsch

    Personal Training / Strength and Nutrition · PG Fitco

    Paul has coached since 2013 and spent seven years in workplace health management at the Charité Berlin. He works with people who sit at a desk all day, on back pain, strength and eating patterns that survive a full calendar.

    Advises us on: Training and nutrition for people with very little time

    Become an advisor

    We are looking for more expert advisors who want to advance preventive care and help people take responsibility for their own long-term health. These are the fields we need most:

    Movement and musculoskeletal health

    sports medicine, exercise physiology, orthopedics, physiotherapy

    Nutrition, metabolism and hormones

    endocrinology, diabetology, nutrition science

    Sleep and recovery

    sleep medicine, sleep science, circadian research

    Brain, mind and behavior

    neurology, psychiatry, psychology, behavioral science

    Heart and circulation

    cardiology, angiology, lipidology

    Cancer and early detection

    oncology, gastroenterology, dermatology, radiology

    Men's and women's health

    urology, gynecology

    Immune system and the biology of aging

    immunology, genomics, geriatrics

    Whole-person care

    general practice, internal medicine, preventive medicine

    If your field is on this list, or close to it, let's get on a call and get to know each other. Write to Malte on LinkedIn, or use the button.

    Contact 20 Years

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