Health 201 · Data Catalog Public health data · 2026-08-09

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NHANES

CDC / NCHS

Source homepage

Access tierBULK-DOWNLOAD Files to download and parse locally.
Access methodBulk download
AuthenticationNone
RegionUnited States
Topicsbiomarkers nutrition exam environmental-exposure survey
Finest geographynational
Update cadencebiennial
How we check freshnesscycle listing page
Statusverified · last checked 2026-08-08
Registry idnhanes

Quirks & gotchas

SAS XPT per cycle, predictable URLs. Survey weights + design vars mandatory. Genetic/linked data RESTRICTED (RDC). Pandemic-era cycle gaps.

Related sources on the same topics

BRFSS
CDC
NHIS
CDC / NCHS
YRBSS
CDC
MEPS
AHRQ
USDA FoodData Central
USDA ARS
UNICEF Data Warehouse
UNICEF

Provenance

Catalog contents: 114 public health data sources
Source of record: registry/sources.yaml in the HealthDataWhiz repository
Built: 2026-08-09
Machine-readable: catalog.json (CC-BY, reuse freely)
This entry: nhanes in registry/sources.yaml
Last verified: 2026-08-08

This catalog describes where public health data lives and how to access it. It is not medical advice, and it does not host or redistribute the data itself — always read each source's own documentation, licence, and suppression rules before using it. Access details drift; entries carry the date we last verified them. Sources marked RESTRICTED are listed for reference only — they require an application or data-use agreement and we never automate access to them.