期刊
ARCHIVES OF INTERNAL MEDICINE
卷 162, 期 6, 页码 657-662出版社
AMER MEDICAL ASSOC
DOI: 10.1001/archinte.162.6.657
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资金
- NCRR NIH HHS [RR00035] Funding Source: Medline
- NIA NIH HHS [AG01760] Funding Source: Medline
- NIDDK NIH HHS [DK02856, DK07732] Funding Source: Medline
Background: Whether the increase in blood pressure with coffee drinking seen in clinical trials persists over time and translates into an increased incidence of hypertension is not known. Methods: We assessed coffee intake in a cohort of 10 17 white male former medical students (mean age, 26 years) in graduating classes from 1948 to 1964 up to I I times over a median follow-up of 33 years. Blood pressure and incidence of hypertension were determined annually by self-report, demonstrated to be accurate in this cohort. Results: Consumption of I cup of coffee a day raised systolic blood pressure by 0.19 mm Hg (95% confidence interval, 0.02-0.35) and diastolic pressure by 0.27 mm Hg (95% confidence interval, 0.15-0.39) after adjustment for parental incidence of hypertension and time-dependent body mass index, cigarette smoking, alcohol drinking, and physical activity in analyses using generalized estimating equations. Compared with nondrinkers at baseline, coffee drinkers had a greater incidence of hypertension during follow-up (18.8% vs 28.3%; P =.03). Relative risk (95% confidence interval) of hypertension associated with drinking 5 or more cups a day was 1.35 (0.87-2.08) for baseline intake and 1.60 (1.06-2.40) for intake over follow-up. After adjustment for the variables listed above, however, these associations were not statistically significant. Conclusion: Over many years of follow-up, coffee drinking is associated with small increases in blood pressure, but appears to play a small role in the development of hypertension.
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