A privacy-first health intelligence platform
Further Health turns the fragmented health data you already have into one private, personalized second opinion.
Decision-support, not diagnosis. Informational only — not medical advice.
Today, Alex — 1 thing to look at
Cross-signal · Apple Watch + Quest · confidence 0.74
Ferritin
HRV
TSH
LDL-C
H-001 · Iron-deficient autonomic stress
conf 0.00Declining ferritin → reduced O₂ delivery → HRV suppression and rising RHR. Validate with CBC + reticulocytes; consider 100 mg ferrous sulfate trial.
The problem · fragmentation
Apple Watch
HRV · 7-day avg
“Why did this drop?”
Oura
Sleep score
“Is this normal for me?”
Quest / LabCorp
Ferritin · low
“Should I worry?”
MyChart / Epic
TSH · trending up
“Has it been climbing?”
23andMe
Pharmacogenomics
“Does this affect my Rx?”
Is my HRV crashing because my ferritin dropped?
The data exists. The answer doesn't and the user is the integration layer.
Our solution
The only platform that ingests every major class of consumer health data — and synthesizes across them. Competitors specialize in one slice. Further owns the whole stack and runs the analysis primarily on the user's own machine.
The core loop
Ranked hypotheses with confidence levels, supporting evidence drawn from the user's own data, and clear validation paths. Decision-support, not diagnosis.
Cross-signal · Apple Watch + Quest · confidence 0.74
Your HRV suppression correlates with low ferritin over the last 90 days. Worth a follow-up panel.
Vitals · last 90 days
Ferritin
↓ 38% · flag
HRV
↓ 11% · watch
TSH
↑ 22% · watch
LDL-C
— · stable
Top hypothesis · Bayesian state · gathering evidence
H-001 · Iron-deficient autonomic stress
conf 0.74Declining ferritin (90d) → reduced O₂ delivery → HRV suppression and rising RHR. Validate with CBC + reticulocytes; consider 100mg ferrous sulfate trial.
Why we win
01 · Storage
Tier 1 holds full PHI, encrypted column-by-column with AES-256-GCM under a KEK/DEK split derived from the user's passphrase. Tier 2 is a one-way pseudonymized mirror — the only surface visible to cloud AI.
02 · Egress
A regex-based firewall with measured 99.92% recall, hardened by clinical BERT and RoBERTa NER models as advisory cross-checks. ML never makes the privacy decision — the gate is deterministic. Any layer detecting PHI hard-blocks.
03 · DNA privacy
Genomes can never be revoked or changed. Further parses your raw file locally and reads only the SNPs needed for analysis. Your raw data is never uploaded, never logged, never shared. Same SNP, same finding, every time.
“The deterministic core is already shipped. KEK/DEK migration, PHI firewall, and the HIF coordinator are all live — engineered, not described.”
Competitive landscape
Capability | WHOOP Advanced Labs Wearables + labs | InsideTracker · Function Lab-centric | 23andMe DNA-centric | Apple Health Distribution | Further Health Synthesis |
|---|---|---|---|---|---|
| Wearables + labs + records + DNA | ~ | ~ | |||
| Cross-signal hypotheses with confidence | ~ | ||||
| Local-first, end-to-end encrypted vault | ~ | ||||
| Deterministic genetic + Rx engine | ~ | ||||
| Action layer · labs · prescriptions | ~ | ||||
| No third-party data brokers | ~ | ~ |
We're talking to investors, accelerator partners, design partners, and people who'd find this useful. If that's you, say hi.