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Dietary protein intake and coronary heart disease in a large community based cohort: results from the Atherosclerosis Risk in Communities (ARIC) study [corrected].

TitleDietary protein intake and coronary heart disease in a large community based cohort: results from the Atherosclerosis Risk in Communities (ARIC) study [corrected].
Publication TypeJournal Article
Year of Publication2014
AuthorsHaring B, Gronroos N, Nettleton JA, von Ballmoos MCWyler, Selvin E
Secondary AuthorsAlonso A
JournalPLoS One
Volume9
Issue10
Paginatione109552
Date Published2014
ISSN1932-6203
KeywordsCohort Studies, Coronary Disease, Dietary Proteins, Female, Humans, Incidence, Male, Middle Aged, Nutrition Surveys, Prospective Studies, Risk, United States
Abstract

BACKGROUND: Prospective data examining the relationship between dietary protein intake and incident coronary heart disease (CHD) are inconclusive. Most evidence is derived from homogenous populations such as health professionals. Large community-based analyses in more diverse samples are lacking.

METHODS: We studied the association of protein type and major dietary protein sources and risk for incident CHD in 12,066 middle-aged adults (aged 45-64 at baseline, 1987-1989) from four U.S. communities enrolled in the Atherosclerosis Risk in Communities (ARIC) Study who were free of diabetes mellitus and cardiovascular disease at baseline. Dietary protein intake was assessed at baseline and after 6 years of follow-up by food frequency questionnaire. Our primary outcome was adjudicated coronary heart disease events or deaths with following up through December 31, 2010. Cox proportional hazard models with multivariable adjustment were used for statistical analyses.

RESULTS: During a median follow-up of 22 years, there were 1,147 CHD events. In multivariable analyses total, animal and vegetable protein were not associated with an increased risk for CHD before or after adjustment. In food group analyses of major dietary protein sources, protein intake from red and processed meat, dairy products, fish, nuts, eggs, and legumes were not significantly associated with CHD risk. The hazard ratios [with 95% confidence intervals] for risk of CHD across quintiles of protein from poultry were 1.00 [ref], 0.83 [0.70-0.99], 0.93 [0.75-1.15], 0.88 [0.73-1.06], 0.79 [0.64-0.98], P for trend  = 0.16). Replacement analyses evaluating the association of substituting one source of dietary protein for another or of decreasing protein intake at the expense of carbohydrates or total fats did not show any statistically significant association with CHD risk.

CONCLUSION: Based on a large community cohort we found no overall relationship between protein type and major dietary protein sources and risk for CHD.

DOI10.1371/journal.pone.0109552
Alternate JournalPLoS One
PubMed ID25303709
PubMed Central IDPMC4193805
Grant ListHHSN268201100005C / / PHS HHS / United States
HHSN268201100009C / / PHS HHS / United States
HHSN268201100010C / / PHS HHS / United States
HHSN268201100008C / / PHS HHS / United States
HHSN268201100012C / / PHS HHS / United States
HHSN268201100007C / / PHS HHS / United States
HHSN268201100011C / / PHS HHS / United States
HHSN268201100006C / / PHS HHS / United States