Longevity medicine should be good medicine.

A Stanford-trained internist writing about prevention, symptoms, labs, and the places longevity medicine gets ahead of itself.

How I think

Good medicine first.

Longevity can get weird fast. The filter is evidence, safety, follow-through, and whether it changes a life.

Know what you are measuring

A lab matters when it changes the decision, not because it makes the dashboard look complete.

Match biology to biography

Risk, symptoms, hormones, sleep, medications, stress, and goals belong in one clinical story.

Retest, edit, stop

Every intervention needs a reason, a check-in, and a way out if it is not helping real life.

Hillary Lin, MD standing in a dark blazer

Why this site exists

Medicine, then systems.

Hillary trained at Stanford and Columbia, then built companies around the same problem: how to turn medical evidence into decisions people can actually use.

Clinical training

Stanford biology and medicine, Columbia oncology training.

Company building

Built a VC-backed mental health company around clinical judgment at scale.

CareCore

Clinical rails for safer, more accountable longevity care.

The Letter is the main doorway.

Prevention, labs, symptoms, and healthspan—written for people who want signal, not miracle language.

Speaking and advisory

A physician voice for hard health topics.

Longevity science, women's health, clinical AI, and care models—with enough medical judgment to be useful.

Speaking and partnerships