Karel de Haas
A pioneer in cellular research, hormones, longevity, and wellness, Karel de Haas is redefining the future of regenerative medicine. As an expert cell biologist, he is renowned for his ability to cultivate human and animal cells, advancing ground-breaking treatments for chronic and degenerative diseases.
With an unparalleled understanding of the body, Karel merges cutting-edge science with holistic health principles, focusing on hormonal balance, anti-aging, and cellular repair. His work not only unlocks the secrets of disease prevention and longevity, but also empowers people to achieve optimal well-being, vitality, and resilience—well into their 80s and beyond.
Dr Celeste van Loggerenberg
Dr. Celeste is a seasoned general practitioner with a specialisation in sports medicine and a reputation for excellence in diagnosing and treating musculoskeletal injuries—particularly through the skilled use of diagnostic ultrasound (sonar). Her clinical approach is both precise and holistic, drawing on a broad spectrum of medical expertise that includes emergency medicine, integrative health, and athletic care.
Known for her sharp clinical intuition and deep curiosity, Dr Celeste thrives on solving complex medical puzzles. She’s a passionate reader and relentless researcher who seeks answers where others may stop looking. Her ability to connect dots across disciplines allows her to treat the whole patient—not just the symptom.
Whether managing acute injury, chronic fatigue, unexplained pain, or elusive diagnoses, Dr Celeste brings clarity, compassion, and strategy to each case she encounters.
“No symptom is random. There’s always a cause—we just have to find it.”
Dr Nina Engelbrecht
Dr Nina Engelbrecht is a general practitioner with a special interest in integrative medicine, combining the best of conventional care with evidence-based natural approaches. Her passion lies in educating and empowering patients—helping them understand the root causes of their symptoms and equipping them with the insight needed to take charge of their health.
With a holistic lens on healing, she focuses on prevention, lifestyle optimization, and cellular wellness—tailoring treatment plans that align with each patient’s unique biology and life stage.
Outside the clinic, Nina is a dedicated half-marathon runner, lover of the outdoors, and firm believer that movement is medicine. Her approach to health is not just clinical—it’s deeply personal.
“I believe in treating the person, not just the diagnosis. True healing starts with understanding.”
Cindy Jordaan
Cindy is the organisational heartbeat of Longevity Lab. As our Practice Administration Manager, she ensures the clinic runs smoothly—from managing patient schedules with flexibility and care, to overseeing stock and supplies with precision. Cindy is known for her reliability, resourcefulness, and can-do attitude. Whether it’s juggling last-minute appointments or solving logistical challenges, she always finds a way to make things work—ensuring every patient receives the attention they deserve. Outside the clinic, Cindy channels her energy into CrossFit, where her discipline, strength, and focus continue to inspire.
“Cindy makes the impossible possible—both behind the desk and under a barbell.”
Sister Dudu
Sister Dudu is a highly skilled and deeply compassionate nurse who plays an integral role in patient care at Longevity Lab. Known for her exceptional ability to find even the trickiest veins, she brings comfort and confidence to patients undergoing IV therapies and treatments.
Beyond her technical expertise, it’s Sister Dudu’s heart for her patients that truly sets her apart. She takes the time to check in regularly, ensuring patients feel supported, informed, and cared for throughout their healing journey. From monitoring side effects to anticipating patient needs, she provides attentive, nurturing care that helps every patient feel seen and valued.
“For Sister Dudu, nursing isn’t just a job—it’s a calling to care deeply and serve generously.”
Tannie Lynette Ludick
Tannie Linette has been part of the Longevity Lab journey from the very beginning. Her deep connection to the practice—and the people in it—makes her a beloved and trusted presence. She knows most of our patients by name, by story, and by heart, and takes genuine joy in checking in on their wellbeing every step of the way.
Tannie also plays a key role behind the scenes, assisting with administration, stock coordination, and making sure patients receive their medications and supplements without delay. Her attention to detail, combined with her warmth and dedication, brings consistency and care to every part of the patient experience.
“Tannie Linette is the quiet anchor of our practice—steady, kind, and always ready to help.”
Contact
073 456 7921
Monday to Friday 08:00 16:00
Suite 9, Hazeldean Medical Centre, Hazeldean Office Park, Silver Lakes Rd, Silver Lakes, 0084