A collaborative team of AI and behavioural science specialists, dedicated to enhancing digital engagement and outcomes across sectors
Meet The Core Team
Dr Paul Sacher
CEO, Clinician Scientist in AI & Behavioural Science, PhD in Obesity Management
Leo Hansel
Lead Machine Learning Engineer, Ex Head of Engineering @ Sky
Dr Emmie Fulton
Lead Psychologist & Behavioural Scientist, PhD in Health Psychology
Gabriele Medeot
Machine Learning Researcher, MSc in Artificial Intelligence, Ex Senior ML Researcher @ TikTok
Jorge Alexander
GenAI Product Owner, MSc in Artificial Intelligence, Ex Co-founder @ Syndi Health
Lev Perlman
Fractional CTO, Google for Startups Accelerator Mentor, Founder of Metamindz
Our mission
Our team of scientists, engineers, psychologists, and clinicians operate within our AI Research and Innovation Lab using a research-driven methodology to deliver fully validated AI solutions that drive innovation and measurable impact across sectors.
As a pioneering consultancy, Sacher AI leads the way in turning science and technology into powerful, cross-sector digital solutions that drive meaningful change in health, behaviour, and well-being.
Founded in 2022 by Dr. Paul Sacher, a global leader and clinician scientist in the fields of applied AI, behavioural science, obesity management and digital health–our firm has a proven track record of transformative projects impacting clients worldwide.
We’re committed to redefining the future of digital engagement, empowering individuals and organisations with innovative solutions that inspire lasting change.
Dr. Paul Sacher: A pioneering force in digital health
Dr Sacher is a global leader and clinician scientist in digital health, transforming scientific knowledge and technology into strategic business solutions and impactful digital products.
He played a pivotal role in creating a digital weight management platform with over 1 million subscribers, and in developing best-in-class predictive models and Generative AI Conversational Agents for patients in 80 countries. In founder and executive positions, Dr. Sacher has steered organisations with an international footprint.
His expertise is recognised globally, having been an invited speaker at 49 national and international conferences, authored 26 peer-reviewed scientific papers, and frequently featured in global media.
Dr. Sacher's work in digital health is characterised by his use of advanced AI, data analysis, and behavioural science to extend the reach and efficacy of health products and services. He remains at the forefront of innovation, advocating for a future in healthcare that is personalised, where AI and behavioural science are applied with precision and empathy to support individual health journeys.
Dr. Sacher's accomplishments
Developed global in-person and digital, health and wellness products and services, including:
- Key strategic, clinical and scientific lead for Allurions’s Generative AI Conversational Agent (chatbot) for weight loss patients (GLP-1s, bariatric surgery, intragastric balloons and lifestyle), designed to augment provider care. Available globally.
- Designed and led transformation of Slimming World’s UK, Ireland and USA digital patient platform. Built from the ground up for scalability and global adaptability. Managed budgets in excess of $6.1mil/annum.
- Led multidisciplinary product development and international program adaptation team (22 employees, 8 contractors in 3 countries), responsible for development of the largest suite of digitally supported family-based weight management programs and services, delivered to children and adults in 7 countries (UK, USA, DK, AUS, CA, NL and NZ). Recommended by CDC and American Academy of Pediatrics.
- Directed all stages of development of a successful health-span and longevity, precision medicine start-up, from inception to pilot.
- Over 27 years of healthcare and academic experience, working in clinical and research roles.
- Led research and evaluation strategies – leading to collaborations with 16 prestigious academic institutions in 6 countries, resulting in 36 peer-reviewed scientific articles, including 4 randomised control trials (gold standard research trials).
- Led Slimming World’s digital research agenda and strategy, resulting in participation in a €5mil, multi-country, EU trial, focused on development of mHealth technologies to support long-term behavior change. Selected by 13 research institutions as Exploitation and Impact Leader.
- Led Research of digital behaviour change coaching intervention and novel AI Conversational Agent, resulting in scientific publications and featured in multiple company press releases.
- Designed and contributed to qualitative evaluations, designed to provide deep understanding of people from multicultural and diverse communities across the UK, USA, AU and CA.
- Commissioned by Morgan Stanley International Foundation to conduct a multicultural community engagement and user needs project to guide implementation of their global Healthy Cities initiative.
- Generated and managed the largest child weight management dissemination dataset internationally.
- Established and chaired 3 international Scientific and Medical Advisory Boards.
- Appointed by Board to create and lead the Behavioural Science team at Allurion Technologies, listed on the NYSE. Led team of multidisciplinary experts, and Global Key Opinion Leaders. Behavioural Science subject matter expert for entire organisation.
- Co-founder of MEND (Mind, Exercise, Nutrition…Do it!), the largest and most effective provider of family-based, child weight management services. Grew MEND from a University spin-out to a multi-million dollar/yr revenue company, with a team of 60 employees in 3 countries (USA, UK and AUS).
- Successfully appointed by Slimming World (SW) Board for newly created role to spearhead the digital adaptation of SW’s hugely successful business (UK’s largest adult weight management organization). Directed all stages of development of SW’s global digital strategy and launch of USA ecommerce subscription service. Digital service grown to over to 1mil UK members.
- Following USA launch of MEND and SW, developed and led comprehensive, targeted, external affairs strategy, resulting in these previously unknown UK programs becoming well respected providers in the competitive USA weight management market.
- Single-handedly initiated industry 1st strategic partnership with Academy of Nutrition and Dietetics (100k members), to co-develop a reimbursable patient referral and feedback process.
- Key team member at Allurion Technologies pre-IPO.
- Catalyzed $45.7mil funding at MEND. Also, commissioned by US public agencies including Centers for Disease Control & Prevention, National Association of Community Health Centers. Worked with Blue Cross Blue Shield entities, Wellpoint, Kaiser Permanente and AmeriGroup.
- Grew MEND revenue to $6.4mil per annum via grants, partnerships, and funding awards.
- Led and/or contributed to 8 funding body research grants, resulting in $12mill research funding.
- External affairs: Featured and quoted in multiple company press releases (example press release).
- Masterclass: Key expert on AI for weight loss and coaching Allurion AI Masterclass.
- Scientific presentations: Invited speaker at 49 national and international conferences, including twice at International Congress of Obesity, World Diabetes Congress, British Medical Association 175th anniversary conference, Royal Society of Medicine and Oxford University.
- Peer-reviewed scientific publications: Published 26 peer-reviewed scientific publications (list of publications).
- TV: Health expert for Jamie Oliver’s Return to School Dinners. Co-presenter and expert on 4 series of BBC’s Honey We’re Killing the Kids. In addition, 60+ appearances on BBC, Sky, Channel 4, ITV.
- Press: 150+ interviews and quotes in national papers and magazines, including Time Magazine.
- Radio: 80+ interviews for national and regional stations.
- Books: Authored From Kid to Superkid (Vermilion) and co-authored 2 books with UK’s bestselling child health and wellbeing authors (Annabel Karmel, Gina Ford).
- Evidence: Invited to provide oral evidence at UK’s House of Lords Behavior Change Enquiry and Academy of Royal Medical Colleges obesity review.
- Corporate commissioned research: Morgan Stanley International Foundation, Healthy London evaluations, Slimming World Digital Transformation Report.
- Awards: MEND selected as the only scalable program to be included as part of the CDC Childhood Obesity Research Demonstration CDC Childhood Obesity Research Demonstration Project. Finalist in 2010 UK’s Chief Medical Officer’s Public Health Awards. Awarded British Dietetic Association’s most prestigious award for 2011.
AI is disrupting healthcare
Behavioural science is the true path to lifelong change.
We have unique skill sets and have successfully built best-in-class AI products.
