Our Practitioners
Kristina Mitts
Clinical Nutritionist and co-author of Solving the Brain Puzzle
Experienced in functional/integrative medicine and microbiota transfer therapy.
Languages: English
Jennifer Brumm
Practitioner for gut health and microbiome support
Certified Nutrition Consultant specializing in microbiome health.
Languages: German & English
Leni Ruess
Certified nutritionist and naturopath, as well as a nervous system and longevity coach. Leni’s work focuses on supporting clients worldwide through personalized guidance in gut health, microbiome modulation, and holistic approaches to long-term wellbeing. With a strong emphasis on the connection between the gut, nervous system, and healthy aging. Leni helps people optimize their health and vitality.
Languages: English, German, Italian
Maria Walden
Maria Wulf-Walden (M.Sc. Health Science, Hamburg) is a gut health coach from Bremen, Germany, specializing in microbiome and histamine-related issues. Personally affected by hEDS, MCAS, and bacterial overgrowth, she combines scientific training with lived experience.
Currently completing certification in Microbiome and Gut Health (FEG, 2025), she offers 1:1 coaching focused on nutrition, FMT preparation and recovery, lifestyle adjustments, and microbiome-friendly healing strategies.
Languages: German, English
Matus Matko
Matus Matko (M.Sc. Biomedical sciences) is a consultant combining formal medical education, a scientific approach, and personal experience to guide clients toward real wellness transformation. He brings deep expertise in gut microbiome restoration, and FMT guidance. Matus helps clients cut through the noise of conflicting advice and focus on what truly matters for through integrative, individualized strategies addressing root causes and recognizing deep body–mind connections.
Languages: English, Slovak
Miriam Lowe
Functional naturopath In Hobart, Australia.
Special interest in microbiome and skin support, with over 6+ years in the field
Languages: English