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. 2016 May 17:353:i2351.
doi: 10.1136/bmj.i2351.

Potato intake and incidence of hypertension: results from three prospective US cohort studies

Lea Borgi  1 , Eric B Rimm  2 , Walter C Willett  2 , John P Forman  3
Affiliations

Potato intake and incidence of hypertension: results from three prospective US cohort studies

Lea Borgi et al. BMJ. .

Abstract

Objective: To determine whether higher intake of baked or boiled potatoes, French fries, or potato chips is associated with incidence of hypertension.

Design: Prospective longitudinal cohort studies.

Setting: Healthcare providers in the United States.

Participants: 62 175 women in Nurses' Health Study, 88 475 women in Nurses' Health Study II, and 36 803 men in Health Professionals Follow-up Study who were non-hypertensive at baseline.

Main outcome measure: Incident cases of hypertension (self reported diagnosis by healthcare provider).

Results: Compared with consumption of less than one serving a month, the random effects pooled hazard ratios for four or more servings a week were 1.11 (95% confidence interval 0.96 to 1.28; P for trend=0.05) for baked, boiled, or mashed potatoes, 1.17 (1.07 to 1.27; P for trend=0.001) for French fries, and 0.97 (0.87 to 1.08; P for trend=0.98) for potato chips. In substitution analyses, replacing one serving a day of baked, boiled, or mashed potatoes with one serving a day of non-starchy vegetables was associated with decreased risk of hypertension (hazard ratio 0.93, 0.89 to 0.96).

Conclusion: Higher intake of baked, boiled, or mashed potatoes and French fries was independently and prospectively associated with an increased risk of developing hypertension in three large cohorts of adult men and women.

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Conflict of interest statement

Competing interests: All authors have completed the ICMJE uniform disclosure form at www.icmje.org/coi_disclosure.pdf (available on request from the corresponding author) and declare: no support from any organization for the submitted work other than that described above; no financial relationships with any organizations that might have an interest in the submitted work in the previous three years; no other relationships or activities that could appear to have influenced the submitted work.

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