Latest blog posts from Dr Tam

Why Zebras don't get ulcers

I read Why Zebras Don’t Get Ulcers about eight years ago, and the image at its centre has never left me. The zebra is chased by a lion. The chase ends. The lion moves on. And within minutes, the zebra is back to grazing, calm, regulated, physiologically reset. The stress response has done its job. […]

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Joyspan Longevity - Why the Longevity Industry Is Finally Reckoning With Its Own Blind Spot

The Global Wellness Summit’s 2026 forecast named something that those of us working inside this field have been observing for a while: a turn away from relentless tracking, and toward a more honest conversation about joyspan and longevity — about what a long life is actually for. The report calls it explicitly, a backlash against […]

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psilocybin longevity

A study published in npj Aging, part of the Nature family of journals, has stopped me in my tracks. Not because it confirms what we already suspected, but because it opens an entirely new line of enquiry into psilocybin and longevity: that psilocybin, the active compound in psychedelic mushrooms, may do more than support mental […]

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Why Women's Heart Health Is More Complex Than a Cholesterol Number

This one is personal. And that is exactly why I need to write it. Women cardiovascular risk is assessed, communicated, and responded to too often inadequately – and a recent paper on women, lipids, and cardiovascular disease made that plain once again. Not because the science does not exist, but because it has not been […]

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I have been working in longevity medicine for over twenty years. In that time I have watched the field become more rigorous, more data-rich, and, in some ways, more confusing for the people it is supposed to serve. The information is everywhere. The protocols multiply. The supplement stacks grow longer. And yet the fundamental question, […]

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