Dataset Information

Association of plant-based diet index with prostate cancer risk.

ABSTRACT:

Background

Plant-based diets are associated with multiple health benefits and a favorable environmental impact. For prostate cancer, previous studies suggest a beneficial role of specific plant-based foods (e.g., tomatoes) and a potentially harmful role of specific animal-based foods (e.g., meat, dairy). However, less is known about plant-based dietary patterns.

Objectives

We sought to examine the relation between plant-based diet indices and prostate cancer risk, including clinically relevant disease.

Methods

This was a prospective cohort study including 47,239 men in the Health Professionals Follow-Up Study (1986-2014). Overall and healthful plant-based diet indices were calculated from FFQs. Cox proportional hazards models were used to estimate HRs and 95% CIs to examine the risk of incident prostate cancer (total and by clinical category), among men ages <65 and ≥65 y.

Results

Of the 47,239 men, 6655 men were diagnosed with prostate cancer over follow-up, including 515 with advanced-stage disease at diagnosis, 956 with lethal disease (metastasis or death), and 806 prostate cancer deaths. Greater overall plant-based consumption was associated with a significantly lower risk of fatal prostate cancer (HR: 0.81; 95% CI: 0.64, 1.01; P-trend = 0.04). In men aged <65, a higher plant-based diet index was associated with a lower risk of advanced, lethal, and fatal prostate cancer. Moreover, greater consumption of a healthful plant-based diet was associated with lower risks of total (HR: 0.84; 95% CI: 0.73, 0.98; P-trend = 0.046) and lethal prostate cancer (HR: 0.56; 95% CI: 0.34, 0.94; P-trend = 0.03) at age <65. There were no associations between overall or healthful plant-based diet indices with prostate cancer among men ≥65 y. Fewer than 1% of participants followed a strict vegetarian or vegan diet.

Conclusions

This prospective study provides supportive evidence that greater consumption of healthful plant-based foods is associated with a lower risk of aggressive forms of prostate cancer, with stronger benefit among men aged <65 y.

SUBMITTER: Loeb S

PROVIDER: S-EPMC8895206 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Association of plant-based diet index with prostate cancer risk.

Loeb Stacy S Fu Benjamin C BC Bauer Scott R SR Pernar Claire H CH Chan June M JM Van Blarigan Erin L EL Giovannucci Edward L EL Kenfield Stacey A SA Mucci Lorelei A LA

The American journal of clinical nutrition 20220301 3

<h4>Background</h4>Plant-based diets are associated with multiple health benefits and a favorable environmental impact. For prostate cancer, previous studies suggest a beneficial role of specific plant-based foods (e.g., tomatoes) and a potentially harmful role of specific animal-based foods (e.g., meat, dairy). However, less is known about plant-based dietary patterns.<h4>Objectives</h4>We sought to examine the relation between plant-based diet indices and prostate cancer risk, including clinic ...[more]

PMID: 34791008

Similar Datasets

Project description:BackgroundHealthy plant-based diet index (hPDI) is associated with a lower risk of cardiometabolic conditions, but its association as well as interactions with microbiome have not been elucidated.ObjectivesWe aimed to investigate the interrelations between hPDI, gut microbiome, and cardiometabolic risk markers.MethodshPDI was derived from dietary assessments by a validated FFQ and was examined in relation to metagenomic profiles of 911 fecal samples collected from 303 men aged 71 ± 4 y with an average BMI (in kg/m2) of 25.2 ± 3.6 in the Men's Lifestyle Validation Study. Principal coordinate (PCo) analysis based on Bray-Curtis dissimilarity was conducted, and interactions between hPDI and PCo were examined by using a metabolic risk score composed of blood lipids, BMI, and glycated hemoglobin.ResultsAfter multivariable adjustment, hPDI was significantly associated with the relative abundance of 7 species and 9 pathways. In particular, higher hPDI was significantly associated with a higher relative abundance of Bacteroides cellulosilyticus and Eubacterium eligens, amino acid biosynthesis pathways (l-isoleucine biosynthesis I and III and l-valine biosynthesis), and the pathway of pyruvate fermentation to isobutanol. A favorable association between hPDI and the metabolic risk score was more pronounced among men with a higher PCo characterized by higher abundance of Bacteroides uniformis and lower abundance of Prevotella copri. At the individual species level, a similar interaction was also observed between hPDI and P. copri, as well as with Clostridium clostridioforme or Blautia hydrogenotrophica (all P-interaction < 0.01).ConclusionA greater adherence to a healthy plant-based diet by older men was associated with a microbial profile characterized by a higher abundance of multiple species, including B. cellulosilyticus and E. eligens, as well as pathways in amino acid metabolism and pyruvate fermentation. In addition, inverse associations between healthy plant-based diet and human metabolic risk may partially depend on microbial compositions.

Project description:PurposeTo our knowledge, no studies have examined the association of diet quality and plant-based diets (PBD) with inflammatory-related mortality in obesity. Therefore, this study aimed to determine the joint associations of Healthy Eating Index-2015 (HEI-2015), plant-based dietary index (PDI), healthy PDI (hPDI), unhealthy PDI (uPDI), pro-vegetarian dietary index (PVD), and systemic inflammation with all-cause, cardiovascular disease (CVD), and cancer mortality risks by obesity status.MethodsParticipants from NHANES were included in cross-sectional (N = 27,915, cycle 1999-2010, 2015-2018) and longitudinal analysis (N = 11,939, cycle 1999-2008). HEI-2015, PDI, hPDI, uPDI, and PVD were constructed based on the 24-h recall dietary interview. The grade of inflammation (low, moderate, and high) was determined based on C-reactive protein (CRP) values and multivariable ordinal logistic regression was used to determine the association. Cox proportional hazard models were used to determine the joint associations of diet and inflammation with mortality.ResultsIn the fully adjusted model, HEI-2015 (ORT3vsT1 = 0.76, 95% CI 0.69-0.84; p-trend = < 0.001), PDI (ORT3vsT1 = 0.83, 95% CI 0.75-0.91; p trend = < 0.001), hPDI (ORT3vsT1 = 0.79, 95% CI 0.71-0.88; p trend = < 0.001), and PVD (ORT3vsT1 = 0.85, 95% CI 0.75-0.97; p trend = 0.02) were associated with lower systemic inflammation. In contrast, uPDI was associated with higher systemic inflammation (ORT3vsT1 = 1.18, 95% CI 1.06-1.31; p-trend = 0.03). Severe inflammation was associated with a 25% increase in all-cause mortality (ORT3vsT1 = 1.25, 95% CI 1.03-1.53, p trend = 0.02). No association was found between PDI, hPDI, uPDI, and PVD with mortality. The joint association, between HEI-2015, levels of systemic inflammation, and all-cause, CVD and cancer mortality, was not significant. However, a greater reduction in mortality risk with an increase in HEI-2015 scores was observed in individuals with low and moderate inflammation, especially those with obesity.ConclusionHigher scores of HEI-2015 and increased intake of a healthy plant-based diet were associated with lower inflammation, while an unhealthy plant-based diet was associated with higher inflammation. A greater adherence to the 2015 dietary guidelines may reduce the risk of mortality associated with inflammation and may also benefit individuals with obesity who had low and moderate inflammation.

Project description:Diet quality is closely related to the occurrence of gastrointestinal (GI) cancers; however, few studies have investigated the association between the Healthy Eating Index (HEI-2020) and the alternative Mediterranean diet (aMED) scores and GI (GI) cancers. This study aims to assess the association between HEI-2020, aMED scores and GI cancers. Information from a total of 26,320 participants was included in the National Health and Nutrition Examination Survey (NHANES). In our sub-analysis, we focused on participants with complete dietary and health data, specifically assessing the relationship between diet quality and GI cancers outcomes. The 24-hour recall questionnaire was used to collect and assess the participants' average dietary intake. Diagnoses of GI cancers were based on self-reported medical history confirmed through physician interviews or linked cancer registry data, ensuring diagnostic reliability. Logistic regression models, restricted cubic splines (RCS), subgroup analysis, and interaction methods were employed to fully evaluate the associations between HEI-2020, aMED scores, and GI cancers. Mediation analysis was also conducted to identify potential mediators of this relationship. Even after fully adjusting for potential confounders, participants with high adherence to the HEI-2020-2020 and aMED scores were significantly associated with a reduced risk of GI cancers. Compared to the lowest tertile of HEI-2020, participants in the highest tertile had a 30% reduced risk of GI cancers (OR 0.70, 95% CI 0.50 to 0.98, p = 0.037). Compared to the lowest tertile of aMED scores, participants in the highest tertile had a 37% reduced risk of GI cancers (OR 0.63, 95% CI 0.44 to 0.92, p = 0.014). RCS analysis indicated that both HEI-2020 and aMED scores were significantly associated with GI cancers; however, no significant non-linear relationship was observed. The primary findings confirm that higher adherence to HEI-2020 and aMED scores is associated with a lower risk of GI cancers. These results suggest that maintaining a high-quality diet may play a crucial role in the prevention and management of these cancers. Further research is needed to elucidate the mechanisms and effects of healthy diet management and high-quality diets in the prevention of GI cancers.

Dataset Information

Association of plant-based diet index with prostate cancer risk.

Background

Objectives

Methods

Results

Conclusions

Publications

Association of plant-based diet index with prostate cancer risk.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets