More years.More choices.

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I’m a physician and founder exploring how medicine and AI can expand what’s possible—and helping you decide what to do with it.

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Out in the world.

Hillary speaking on the MVMNT stage
On stage at MVMNT
Hillary and colleagues at the CareCore booth during Livelong
CareCore at Livelong
Hillary laughing with other women at Livelong
Between sessions at Livelong

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The Longevity
Letter

The research I’m thinking about, and what it could mean for everyday life.

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Articles, practical guides, and past episodes. Explore a question at your own pace.

Medical care

Ongoing care with Dr. Lin, built around your health and goals.

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Healthspace

Care, programs, and products, with medical judgment behind the choices.

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From the desk.

Peptides: What I’m Not Seeing in My Patients | Dr. Mayoni episode thumbnail

The Longevity Show · 15:10

Peptides: What I’m Not Seeing in My Patients | Dr. Mayoni

I’ve heard plenty of big promises about peptides. What I’m seeing in practice is a lot less dramatic, with an important exception: GLP-1s. In this conversa

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Psyllium gel, oats, wheat bran, and chicory root arranged on a warm stone surface in natural light.

Featured guide · Aug 2026

Fiber, Constipation, and Bloating: What Helps, What Backfires, and How Much You Need

Fiber is not one substance, and more is not always better. Match the type and dose to the job your gut actually needs.

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The Longevity Letter · September 28, 2026

What happens when you're worn down

After travel and three conferences, I look at sleep, stress, and the first steps toward recovery.

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Longevity is
about choice.

More time gives us more choices. I’m interested in the science that makes them possible, and the judgment we need to use them well.

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