Fiber Intake Linked to All-Cause Mortality

ABSTRACT Background An inverse association has been shown between dietary fiber intake and several noncommunicable diseases. However, evidence of this effect remains unclear in the Asian population. Objective We examined the association between dietary fiber intake and all-cause and cause-specific mortality, as well as the association between fiber intake from dietary sources and all-cause mortality. Methods We conducted a large-scale population-based cohort study (Japan Public Health Center-based prospective study). A validated questionnaire with 138 food items was completed by 92,924 participants (42,754 men and 50,170 women) aged 45–74 y. Dietary fiber intake was calculated and divided into quintiles. HR and 95% CI of total and cause-specific mortality were reported. Results During the mean follow-up of 16.8 y, 19,400 deaths were identified. In multivariable adjusted models, total, soluble, and insoluble fiber intakes were inversely associated with all-cause mortality. The HRs of total mortality in the highest quintile of total fiber intake compared with the lowest quintile were 0.77 (95% CI: 0.72, 0.82; Ptrend <0.0001) in men and 0.82 (95% CI: 0.76, 0.89; Ptrend <0.0001) in women. Increased quintiles of dietary fiber intake were significantly associated with decreased mortality due to total cardiovascular disease (CVD), respiratory disease, and injury in both men and women, whereas dietary fiber intake was inversely associated with cancer mortality in men but not women. Fiber from fruits, beans, and vegetables, but not from cereals, was inversely associated with total mortality. Conclusion In this large-scale prospective study with a long follow-up period, dietary fiber was inversely associated with all-cause mortality. Since intakes of dietary fiber, mainly from fruits, vegetables, and beans were associated with lower all-cause mortality, these food sources may be good options for people aiming to consume more fiber.

Download Full-text

Fiber intake and all-cause mortality in the Prevención con Dieta Mediterránea (PREDIMED) study

American Journal of Clinical Nutrition ◽

10.3945/ajcn.114.093757 ◽

2014 ◽

Vol 100 (6) ◽

pp. 1498-1507 ◽

Cited By ~ 44

Author(s):

Pilar Buil-Cosiales ◽

Itziar Zazpe ◽

Estefanía Toledo ◽

Dolores Corella ◽

Jordi Salas-Salvadó ◽

...

Keyword(s):

Fiber Intake ◽

All Cause Mortality ◽

Predimed Study ◽

Dieta Mediterranea ◽

Dieta Mediterránea

Download Full-text

Abstract MP61: Dietary Fiber Intake and Mortality Among Myocardial Infarction Survivors

Circulation ◽

10.1161/circ.129.suppl_1.mp61 ◽

2014 ◽

Vol 129 (suppl_1) ◽

Author(s):

Shanshan Li ◽

Alan Flint ◽

Jennifer Pai ◽

John Forman ◽

Frank Hu ◽

...

Keyword(s):

Myocardial Infarction ◽

Dietary Fiber ◽

Cardiovascular Mortality ◽

Cox Proportional Hazards ◽

Health Study ◽

Fiber Intake ◽

Fiber Post ◽

All Cause Mortality ◽

Cereal Fiber

Background: Dietary fiber is associated with lower risk of coronary heart disease in healthy populations. It is unclear whether higher consumption of dietary fiber after myocardial infarction (MI) is associated with lower mortality. Objective: To evaluate the associations of dietary fiber post-MI and changes from pre- to post- with all-cause and cardiovascular mortality. Design: The Nurses’ Health Study (NHS) and the Health Professionals Follow-Up Study (HPFS) are two large prospective cohort studies of US women and men with repeated dietary measurements. We included 2,258 women and 1,840 men who were free of cardiovascular disease, stroke or cancer at enrollment, survived a first MI during follow up, were free of stroke at the time of initial MI onset, and provided both pre-MI and at least one post-MI food frequency questionnaire. We evaluated the associations of dietary fiber post-MI and changes from pre- to post- with all-cause and cardiovascular mortality using Cox proportional hazards models, adjusting for medication use, medical history, and lifestyles factors. Results: Higher post-MI fiber intake was significantly associated with lower all-cause mortality (Comparing extreme quintiles, pooled hazard ratio (HR) = 0.75, 95%CI: 0.58-0.97). Greater intake of cereal fiber was more strongly associated with all-cause mortality (Pooled HR=0.73, 95%CI: 0.58-0.91) than were other sources of dietary fiber. Increased fiber intake from pre- to post- was significantly associated with lower all-cause mortality (Pooled HR=0.69, 95%CI: 0.55-0.87). Conclusions: In this prospective study of MI survivors, greater post-MI intake of dietary fiber, especially cereal fiber, was inversely associated with all-cause mortality. In addition, increasing consumption of fiber from pre- to post-MI periods was significantly associated with lower all-cause and cardiovascular mortality.

Download Full-text