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Landmark 91/100

EPIC — Diet quality and risk of COPD

In plain English

Pooling the Nurses' Health Study and Health Professionals Follow-Up Study (120,000+ adults followed 16 years), participants in the top fifth of the Alternative Healthy Eating Index had about 33% lower risk of newly diagnosed COPD. The protection held after adjusting for smoking, age and other risks.

Why it matters

High AHEI score → 33% lower COPD risk over 16 years.

Informs: Respiratory

Provenance

Design
Prospective cohort
Sample size (n)
120,000
Follow-up
16 years
Peer-reviewed
Yes
Replications
2
Funding
Public / academic
Funders
US National Institutes of Health
Institutions
Harvard T.H. Chan School of Public Health, INSERM

decades.plus score

A transparent 0–100 weighted sum across six components. Higher scores reflect bigger, cleaner, more replicated work.

Landmark 91/100
  • Study design 20/25
  • Sample size 20/20
  • Funding independence 20/20
  • Journal + peer review 15/15
  • Institution tier 10/10
  • Replication 6/10

Caveats

Observational; AHEI score correlates with many healthy behaviours. Smoking is still the dominant COPD risk factor by an order of magnitude.