Longevity medicine
should be
good medicine.

I work at the intersection of longevity medicine and AI—giving people more agency over their health and clinicians better systems for practicing medicine.

Board-certified internist · CareCore co-founder · Host of The Longevity Show

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Hillary Lin, MD

As seen in

ForbesHealthEatingWellParadeYahoo!

For your health. For people building care.

The same work has two audiences: people making decisions about their own health, and the clinicians and builders creating better ways to care for them.

Personal health

Evidence, context, and physician-led care when you need it.

Explore the public libraryGuides, essays, and conversations for understanding the question.Subscribe to The Longevity LetterA sourced weekly note for making sense of health claims.Explore medical careCurrent Hillary Lin MD care options on CareCore.

Clinicians and builders

Ideas and systems for making better care possible.

The CareCore StackNotes for people turning health products into real care.Explore CareCoreHow CareCore connects clinical judgment, products, and operations.

New work

From the desk.

The newest episode, guide, and essay — one of each, replaced as they publish.

Doctor-written guides on labs, exercise, supplements, medications, and longevity claims.

Latest guide · Jul 2026Vitamin D Is Not Useless. It Is Just Not Magic.Vitamin D is an essential threshold nutrient, not a universal longevity drug. Failed prevention trials corrected the hype, but they did not make…Open guideLatest essay · April 28, 2026The one supplement I might throw away firstA new aging mechanism puts iron on trial, and it matters even if you never bought an iron pill.Read essay

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Good medicine first.

The same standard I use in clinic: good evidence, a clear reason to act, and a willingness to stop when something isn’t helping.

Clinical care

Know what you’re measuring

A lab is useful when it changes the decision, not because it makes the report look complete.

Results need context

A lab value only means something alongside symptoms, history, and what you’re trying to change.

Stopping is a treatment too

Anything worth starting deserves a check-in, and an exit if it isn’t helping.

Hillary Lin, MD standing in a dark blazer

Medicine, then systems that compound.

Hillary trained at Stanford and Columbia, then kept returning to the same question: how can better evidence, AI, and accountable infrastructure give people and clinicians more agency without making medicine less human?

Clinical training

Stanford biology and medicine, Columbia oncology training.

AI and agency

Use AI to help people understand their health and give clinicians more leverage without pretending software replaces judgment.

CareCore

Build reusable clinical and operating infrastructure so expert-founded care models do not require a headcount-heavy institution.

Long horizon

Turn care models into evidence and standards that can compound into better diagnostics, devices, and interventions.

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This is where I think in public.

Prevention, labs, symptoms, and healthspan, written for people who want straight answers without the miracle language.

The Longevity LetterGet the weekly noteA weekly look at new tests, treatments, and claims — and whether the evidence holds up.Subscribe

Building in care? The CareCore Stack ↗ is the builder-side note.