Meet our founders
Building the future of evidence-based nutrition education
Bridging science, education, and practical application
+442033939511
© 2012-2026 The Health Sciences Academy ® All Rights Reserved.
Maurice Castelijn is the Co-Founder and Chief Executive Officer of The Health Sciences Academy® (THSA), leading the organisation’s strategic growth, innovation, and digital education initiatives.
With an MBA from London Business School and a background spanning business strategy, technology, automation, and online education, Maurice focuses on creating practical learning experiences that help health and nutrition professionals build confidence, grow their careers, and make a greater impact through evidence-based practice.
Together with Alex Ruani, he has helped shape THSA into a globally recognised education platform designed to bridge the gap between science, practical application, and professional success.
Maurice is particularly passionate about helping practitioners turn knowledge into action — combining education, technology, and business strategy to support sustainable growth in modern health and nutrition practice.
Alex Ruani is the Co-Founder and Chief Science Educator of The Health Sciences Academy®, where she leads the scientific direction behind THSA’s certifications, practitioner programs, and continuing education curriculum.
A Doctoral Researcher in Nutrition Science Education at University College London (UCL), Alex specialises in health and diet misinformation, nutrition communication, and evidence-based practice.
Over the past decade, she has directed educational programs that have helped nutrition and health professionals strengthen their confidence, practical skills, and client impact through science-backed learning.
Alex is passionate about translating complex science into practical strategies that professionals can apply confidently in clinical, coaching, and wellness settings.
© Copyright The Health Sciences Academy. The content, graphs and charts on this page have been exclusively prepared for The Health Sciences Academy and its prospect students, existing students and graduates. None of the content on this page and website may be reproduced, copied or altered without our explicit permission. Criminal and legal penalties for copyright and other infringement apply. Pricing for UK and EU is excluding VAT, and tax-free everywhere else. All Terms and Conditions apply.
Helping health and wellness professionals grow successful client practices
Raising industry standards since 2012 through personalised nutrition science