Grounded in 250M+ peer-reviewed papersSee how →
The engine

Yesil Health
Intelligence.

The thinking engine behind every Yesil product. Grounded in the entire indexed medical literature, calibrated for evidence, and equipped with persistent Yesil Memory™ that recalls labs, vitals and conversations across months.

Three pillars

What makes it trustworthy.

INPUT

360° health context

Steps, sleep, heart rate, labs, vitals, programs, photos, symptoms — every signal you share, in one persistent view.

KNOWLEDGE

Evidence-grounded reasoning

Pulls from 250M+ peer-reviewed papers, every FDA drug label, registered trials and clinical guidelines — at request time.

CONTINUITY

Yesil Memory™

Persistent health memory of your labs, conversations and goals — scoped per user, recalled in every new answer.

No hallucinations

Every claim, grounded in real literature.

Generic AI fabricates citations. Yesil Health Intelligence refuses to. Every important answer is retrieved from indexed research before generation — and a citation goes back with the response. When the evidence is weak, the engine says so.

Indexed at request time

  • Peer-reviewed research
  • High-impact articles, systematic reviews, meta-analyses
  • FDA drug labels
  • Clinical trial registries
  • Clinical practice guidelines
  • Drug & supplement monographs
  • Medical society guidance
Yesil Memory™

Remembers labs. Remembers context.

Not a chat history. A health-specific persistent memory of your labs, vitals, programs and conversations — scoped per user, weighed in every new answer.

  • 1

    6 months ago

    Vitamin D 18 ng/mL

    Lab flagged in your records.

  • 2

    5 months ago

    Started 2,000 IU

    Recorded as new supplement.

  • 3

    1 month ago

    Migraine pattern

    <6h sleep correlates with episodes.

  • 4

    Today

    “How am I doing?”

    Engine recalls all of the above in context.

Every signal stays scoped per user. The engine recalls it when the question makes it relevant — not before.

Lab values + reference ranges (last 24 months)
Vital signs + trends
Active programs + targets
Medications + supplement history
Symptoms + flagged patterns
Saved conversations + facts
Goals in your own words
Family history + risk factors
Photos and uploaded reports
One engine, three surfaces

Powering every Yesil product.

The same engine runs across consumer, clinical and developer.