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Our Mission
Health for Longevity (H4L) is a global initiative dedicated to the advancement of health and wellness practices to enhance the quality and duration of human life. Our international community of healthcare professionals is committed to fostering interdisciplinary collaborations, promoting innovative medical approaches, and sharing culturally diverse perspectives on longevity. Through our educational programs, research support, and advocacy, we aim to inspire and empower both practitioners and the public to embrace proactive, preventive healthcare models that extend healthspan across all stages of life.
Our Vision for Healthy Living
What We Do
Promote Longevity
Promote Longevity
Promote Longevity
Advancing health practices to enhance life quality and span.
Build Community
Promote Longevity
Promote Longevity
Connecting healthcare professionals globally for collaborative growth.
Educate
Promote Longevity
Innovation
Providing cutting-edge educational resources and seminars.
Innovation
Promote Longevity
Innovation
Supporting research and innovation in preventative healthcare.
The Team
William Han, MD
The Day I Realized Aging Was Optional
I never planned to become a doctor who helps people grow younger. Like most physicians trained in the Western medical system, my focus for years was treating disease — diagnosing symptoms, prescribing medications, and managing decline. What if aging wasn’t something to fear — but something you could influence, even reverse.
My book Younger, Longer blends the latest breakthroughs in Western science with the wisdom of Eastern medicine to reveal a powerful, integrative approach to longevity.
Drawing from clinical experience and inspired by patients like Mei — a vibrant 74-year-old thriving on herbs, breathwork, and tai chi — this guide challenges the outdated belief that decline is inevitable. Inside, you'll learn how to: Measure and reverse your biological age. Optimize energy, brain health, and hormone balance. Use movement, breath, nutrition, and mindset as medicine. Integrate advanced tools like peptides, stem cells, and personalized testing.
This is not about chasing youth — it’s about expanding your healthspan: the years you live with clarity, strength, and joy. Your body holds the blueprint for renewal. Younger, Longer shows you how to unlock it.
Dr. Han, MD
President/ Founder, H4L
E. Lyle Gross, MD, FRCPC, BCETS, FRACP
A Healer at Heart, Bridging Borders Through Compassion and Care
Dr. Lyle Gross is an internationally recognized expert in Physical Medicine and Rehabilitation and currently serves as an Adjunct Professor at the University of British Columbia (UBC) in Vancouver, Canada. A native of Edmonton, Alberta, he completed his medical degree at the University of Calgary and specialist training at the University of British Columbia and the University of Washington.
Dr. Gross has held senior clinical and academic roles at institutions including the Mayo Clinic, where he was honored for excellence in teaching, and the University of Otago in New Zealand. Throughout his career, he has pioneered rehabilitation programs addressing chronic pain, disability, and complex trauma in Canada and globally, including projects across the U.S., Europe, Africa, and Asia.
A passionate educator and humanitarian, Dr. Gross is known for his global outreach. During a visit to Ludhiana, India, he funded life-saving surgery for an accident victim and initiated collaborative efforts with Christian Medical College and Hospital (CMCH) to advance rehabilitation services and medical education. His work continues to influence healthcare systems, insurers, and governments worldwide in areas of policy, TeleHealth, and rehabilitation service design.
Dr. Gross, MD, FRCPC, BCETS, FRACP
Chairman, H4L