Whole grain and dietary fiber intake and prostate cancer aggressiveness by race

Abstract The objectives of this review were to investigate the status and characteristics of national grain consumption and dietary fiber intake among Chinese adults (aged ≥20 years) and to examine trends in consumption from 1982 to 2015. Data from 5 national surveys that collected dietary information using a household food weighing method and 24-hour dietary recall over 3 consecutive days were analyzed. In 2015, mean grain consumption was 281.1 g/per capita/d (rice 145.6 g, wheat flour 120.7 g, other grains 14.8 g). Total dietary fiber intake was 9.7 g/per capita/d, of which 3.8 g/per capita/d came from grains and accounted for nearly 40% of total dietary fiber intake for adults. The other major sources of dietary fiber were vegetables and fruits. The data indicates consumption of grains and dietary fiber in the Chinese population has been continuously declining since 1982 and the consumption of refined grains has increased. In order for the Chinese population to meet dietary recommendations for whole grain and dietary fiber intake, increasing the availability of more appealing whole grain products and public education are recommended.

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Total Dietary Fiber Intake, Whole Grain Consumption, and Their Biological Effects

Bioactive Molecules in Food - Reference Series in Phytochemistry ◽

10.1007/978-3-319-78030-6_7 ◽

2019 ◽

pp. 701-722

Author(s):

Semih Otles ◽

Emine Nakilcioglu-Tas

Keyword(s):

Dietary Fiber ◽

Biological Effects ◽

Fiber Intake ◽

Whole Grain ◽

Total Dietary Fiber ◽

Dietary Fiber Intake

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Whole grain and dietary fiber intake and risk of colorectal cancer in the NIH-AARP Diet and Health Study cohort

American Journal of Clinical Nutrition ◽

10.1093/ajcn/nqaa161 ◽

2020 ◽

Vol 112 (3) ◽

pp. 603-612 ◽

Cited By ~ 2

Author(s):

Autumn G Hullings ◽

Rashmi Sinha ◽

Linda M Liao ◽

Neal D Freedman ◽

Barry I Graubard ◽

...

Keyword(s):

Colorectal Cancer ◽

Rectal Cancer ◽

Dietary Fiber ◽

Whole Grains ◽

Health Study ◽

Inverse Association ◽

Fiber Intake ◽

Whole Grain ◽

Dietary Fiber Intake ◽

The Impact

ABSTRACT Background Whole grains and other foods containing fiber are thought to be inversely related to colorectal cancer (CRC). However, whether these associations reflect fiber or fiber source remains unclear. Objectives We evaluated associations of whole grain and dietary fiber intake with CRC risk in the large NIH-AARP Diet and Health Study. Methods We used Cox proportional hazard models to estimate HRs and 95% CIs for whole grain and dietary fiber intake and risk of CRC among 478,994 US adults, aged 50–71 y. Diet was assessed using a self-administered FFQ at baseline in 1995–1996, and 10,200 incident CRC cases occurred over 16 y and 6,464,527 person-years of follow-up. We used 24-h dietary recall data, collected on a subset of participants, to evaluate the impact of measurement error on risk estimates. Results After multivariable adjustment for potential confounders, including folate, we observed an inverse association for intake of whole grains (HRQ5 vs.Q1 : 0.84; 95% CI: 0.79, 0.90; P-trend < 0.001), but not dietary fiber (HRQ5 vs. Q1: 0.96; 95% CI: 0.88, 1.04; P-trend = 0.40), with CRC incidence. Intake of whole grains was inversely associated with all CRC cancer subsites, particularly rectal cancer (HRQ5 vs. Q1: 0.76; 95% CI: 0.67, 0.87; P-trend < 0.001). Fiber from grains, but not other sources, was associated with lower incidence of CRC (HRQ5 vs. Q1: 0.89; 95% CI: 0.83, 0.96; P-trend < 0.001), particularly distal colon (HRQ5 vs. Q1: 0.84; 95% CI: 0.73, 0.96; P-trend = 0.005) and rectal cancer (HRQ5 vs. Q1: 0.77; 95% CI: 0.66, 0.88; P-trend < 0.001). Conclusions Dietary guidance for CRC prevention should focus on intake of whole grains as a source of fiber.

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Abstract 1738: A pooled analysis of carbohydrate and dietary fiber intake and prostate cancer risk

10.1158/1538-7445.am2016-1738 ◽

2016 ◽

Cited By ~ 1

Author(s):

Elkhansa Sidahmed ◽

Stephen J. Freedland ◽

Kana Wu ◽

Jeanine M. Genkinger ◽

Stephanie A. Smith-Warner

Keyword(s):

Prostate Cancer ◽

Cancer Risk ◽

Dietary Fiber ◽

Prostate Cancer Risk ◽

Pooled Analysis ◽

Fiber Intake ◽

Dietary Fiber Intake

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Intake of Grains and Dietary Fiber and Prostate Cancer Aggressiveness by Race

Prostate Cancer ◽

10.1155/2012/323296 ◽

2012 ◽

Vol 2012 ◽

pp. 1-10 ◽

Cited By ~ 12

Author(s):

Fred Tabung ◽

Susan E. Steck ◽

L. Joseph Su ◽

James L. Mohler ◽

Elizabeth T. H. Fontham ◽

...

Keyword(s):

Prostate Cancer ◽

Dietary Fiber ◽

Clinical Stage ◽

Whole Grains ◽

Gleason Grade ◽

Inverse Association ◽

Fiber Intake ◽

Refined Grains ◽

Aggressive Prostate Cancer ◽

Cancer Aggressiveness

Purpose. To examine the associations among intake of refined grains, whole grains and dietary fiber and aggressiveness of prostate cancer in African Americans (AA,n=930) and European Americans (EA,n=993) in a population-based, case-only study (The North Carolina-Louisiana Prostate Cancer Project, PCaP).Methods. Prostate cancer aggressiveness was categorized as high, intermediate or low based on Gleason grade, PSA level and clinical stage. Dietary intake was assessed utilizing the NCI Diet History Questionnaire. Logistic regression (comparing high to intermediate/low aggressive cancers) and polytomous regression with adjustment for potential confounders were used to determine odds of high prostate cancer aggressiveness with intake of refined grains, whole grains and dietary fiber from all sources.Results. An inverse association with aggressive prostate cancer was observed in the 2nd and 3rd tertiles of total fiber intake (OR = 0.70; 95% CI, 0.50–0.97 and OR = 0.61; 95% CI, 0.40–0.93, resp.) as compared to the lowest tertile of intake. In the race-stratified analyses, inverse associations were observed in the 3rd tertile of total fiber intake for EA (OR = 0.44; 95% CI, 0.23–0.87) and the 2nd tertile of intake for AA (OR = 0.57; 95% CI, 0.35–0.95).Conclusions. Dietary fiber intake was inversely associated with aggressive prostate cancer among both AA and EA men.

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