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Diabetes Care Volume 39, March 2016
Potato Consumption and Risk of Type 2 Diabetes: Results From Three Prospective Cohort Studies
Isao Muraki,1,2 Eric B. Rimm,2,3,4 Walter C. Willett,2,3,4 JoAnn E. Manson,3,4,5 Frank B. Hu,2,3,4 and Qi Sun2,4
EPIDEMIOLOGY/HEALTH SERVICES RESEARCH
Diabetes Care 2016;39:376–384 | DOI: 10.2337/dc15-0547
OBJECTIVE
We aimed to elucidate whether potato consumption is associated with a higher risk of type 2 diabetes (T2D). RESEARCH DESIGN AND METHODS
We analyzed data in three cohorts consisting of U.S. male and female health professionals without diabetes, cardiovascular disease, and cancer at baseline: 70,773 women from the Nurses’ Health Study (1984–2010), 87,739 women from Nurses’ Health Study II (1991–2011), and 40,669 men from the Health Professionals Follow-up Study (1986–2010). Potato consumption was assessed quadrennially using validated food frequency questionnaires (FFQs), and we calculated 4-year change in potato consumption from consecutive FFQs. Self-reported T2D diagnosis was confirmed using a validated supplementary questionnaire. RESULTS
During 3,988,007 person-years of follow-up, 15,362 new cases of T2D were identified. Higher consumption of total potatoes (including baked, boiled, or mashed potatoes and french fries) was significantly associated with an elevated risk for T2D: the pooled hazard ratio (HR) of T2D compared with
Diabetes Care Volume 39, March 2016
Potato Consumption and Risk of Type 2 Diabetes: Results From Three Prospective Cohort Studies
Isao Muraki,1,2 Eric B. Rimm,2,3,4 Walter C. Willett,2,3,4 JoAnn E. Manson,3,4,5 Frank B. Hu,2,3,4 and Qi Sun2,4
EPIDEMIOLOGY/HEALTH SERVICES RESEARCH
Diabetes Care 2016;39:376–384 | DOI: 10.2337/dc15-0547
OBJECTIVE
We aimed to elucidate whether potato consumption is associated with a higher risk of type 2 diabetes (T2D). RESEARCH DESIGN AND METHODS
We analyzed data in three cohorts consisting of U.S. male and female health professionals without diabetes, cardiovascular disease, and cancer at baseline: 70,773 women from the Nurses’ Health Study (1984–2010), 87,739 women from Nurses’ Health Study II (1991–2011), and 40,669 men from the Health Professionals Follow-up Study (1986–2010). Potato consumption was assessed quadrennially using validated food frequency questionnaires (FFQs), and we calculated 4-year change in potato consumption from consecutive FFQs. Self-reported T2D diagnosis was confirmed using a validated supplementary questionnaire. RESULTS
During 3,988,007 person-years of follow-up, 15,362 new cases of T2D were identified. Higher consumption of total potatoes (including baked, boiled, or mashed potatoes and french fries) was significantly associated with an elevated risk for T2D: the pooled hazard ratio (HR) of T2D compared with
