Nutritional Advice El Mondo
Objectives:
Data on the association of nut intake with risk of cancer and its mortality are conflicting. Although previous meta-analyses summarized available findings in this regard, some limitations may distort their findings. Moreover, none of these meta-analyses examined the dose-response associations of total nut intake with the risk of specific cancers as well as associations between specific types of nuts and cancer mortality. Therefore, this review article (meta-analysis) has been conducted.
Do higher nut dietary intakes reduce risk of cancer incidence and mortality?
Study design:
This review article included in total 43 articles (observational studies) on cancer risk and 9 articles (observational studies) on cancer mortality.
Results and conclusions:
The investigators found when comparing the highest with lowest intakes of total nuts, the highest intakes of total nuts (tree nuts and peanuts), significantly reduced risk of cancer with 16% [summary effect size = 0.86, 95% CI = 0.81 to 0.92, p 0.001, I2 = 58.1%, p 0.01].
The investigators found when comparing the highest with lowest intakes of tree nuts, the highest intakes of tree nuts significantly reduced risk of cancer with 13% [pooled effect size = 0.87, 95% CI = 0.78 to 0.96, p 0.01, I2 = 15.8%, p = 0.28].
The investigators found based on the dose-response analysis, a 5-g/d increase in total nut intake was associated with 3%, 6% and 25% lower risks of overall, pancreatic and colon cancers, respectively.
The investigators found in terms of cancer mortality, 13%, 18% and 8% risk reductions with higher intakes of total nuts, tree nuts and peanuts, respectively.
The investigators found, in addition, a 5-g/d increase in total nut intake was associated with a 4% lower risk of cancer mortality.
The investigators concluded there is a protective association between total nut and tree nut intake and the risk of cancer and its mortality.
Original title:
Association of Total Nut, Tree Nut, Peanut, and Peanut Butter Consumption with Cancer Incidence and Mortality: A Comprehensive Systematic Review and Dose-Response Meta-Analysis of Observational Studies by Naghshi S, Sadeghian M, […], Sadeghi O.
Link:
https://pubmed.ncbi.nlm.nih.gov/33307550/
Additional information of El Mondo:
Find more information/studies on significant/cohort studies, nuts consumption and cancer right here.
Tree nuts in this review article are walnuts, pistachios, macadamia nuts, pecans, cashews, almonds, hazelnuts and Brazil nuts.