Food

Coffee and tea

Dietary factor.

In practice

It depends on the case; there is no single guideline.

Effect by goal · level of evidence

Type 2 diabetes risk

association Moderate study (A)

Whitehall II cohort (~5,800 people, ~12 years): higher coffee consumption (caffeinated and decaffeinated) was associated with lower risk of type 2 diabetes (HR 0.80), in line with more than a dozen previous cohorts. Observational, but widely replicated.

View the study (study) →

In depth

Diet · Highest evidence: Moderate · 1 finding

Findings

Type 2 diabetes risk — association (Moderate, study). Whitehall II cohort (~5,800 people, ~12 years): higher coffee consumption (with and without caffeine) was associated with lower risk of type 2 diabetes (HR 0.80), in line with more than a dozen previous cohorts. Observational, but highly replicated. 18315891

Information, not medical advice. Prescription drugs require a doctor.

Information, not medical advice. Scientific evidence reflects the quality of the studies.