FOUNDER. PRACTITIONER. ADVOCATE.

A More Complete Definition of Longevity

For nearly three decades, Heidi Kunzli has worked with individuals and families confronting complex issues involving mental health, addiction, behavior and quality of life.

Today, that experience informs a broader body of work exploring what remains underrepresented in the modern longevity movement: the psychological, emotional and relational dimensions of living well.

“The next frontier of longevity may not be another biomarker. 
It may be understanding the person behind them.”

– HEIDI KUNZLI
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We have become remarkably sophisticated at extending lifespan. We remain far less sophisticated at addressing the psychological, emotional and relational forces that determine how those years are actually lived.

For over three decades, Heidi Kunzli has worked at that intersection. In the video above, hear from the multidisciplinary team of experts she leads at Privé-Swiss.

“My work has always been driven by one belief: a longer life means little without the ability to live it well.”

– HEIDI KUNZLI

We are trying to live longer.

But have we adequately considered what makes those additional years worth living?


Longevity is not simply biological. A person can optimize biomarkers, nutrition, sleep and physical performance—and remain profoundly unwell. Heidi Kunzli’s work examines the dimension of longevity that cannot be measured by a blood panel: mental health, relationships, behavior, purpose, resilience and the capacity to meaningfully engage with life. Heidi Kunzli has spent over 30 years working with people whose lives reveal the limitations of a purely biological definition of health.

As Founder and Executive Director of Privé-Swiss, Heidi brings decades of clinical experience together with advanced training in lifestyle medicine and biomedical sciences to help redefine the conversation around longevity. Through Privé-Swiss, an exclusive, multidisciplinary clinical retreat model, she leads the integration of medical expertise, brain health, psychological wellbeing, and behavioral science into highly individualized programs. Her approach bridges the gap between biological optimization and meaningful, sustainable change, recognizing mental and brain health as essential foundations of a longer, healthier life.