Red meat and type 2 diabetes: do methodological advancements sufficiently increase the certainty of evidence?

Kremer, Daan

doi:10.1016/j.ajcnut.2023.09.022

The American Journal of Clinical Nutrition

2023

DOI: 10.1016/j.ajcnut.2023.09.022

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Red meat and type 2 diabetes: do methodological advancements sufficiently increase the certainty of evidence?

Daan Kremer

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2024

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Causal Relationship between Meat Intake and Biological Aging: Evidence from Mendelian Randomization Analysis

Liu,

Deng,

Liu

et al. 2024

Nutrients

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Existing research indicates that different types of meat have varying effects on health and aging, but the specific causal relationships remain unclear. This study aimed to explore the causal relationship between different types of meat intake and aging-related phenotypes. This study employed Mendelian randomization (MR) to select genetic variants associated with meat intake from large genomic databases, ensuring the independence and pleiotropy-free nature of these instrumental variables (IVs), and calculated the F-statistic to evaluate the strength of the IVs. The validity of causal estimates was assessed through sensitivity analyses and various MR methods (MR-Egger, weighted median, inverse-variance weighted (IVW), simple mode, and weighted mode), with the MR-Egger regression intercept used to test for pleiotropy bias and Cochran’s Q test employed to evaluate the heterogeneity of the results. The findings reveal a positive causal relationship between meat consumers and DNA methylation PhenoAge acceleration, suggesting that increased meat intake may accelerate the biological aging process. Specifically, lamb intake is found to have a positive causal effect on mitochondrial DNA copy number, while processed meat consumption shows a negative causal effect on telomere length. No significant causal relationships were observed for other types of meat intake. This study highlights the significant impact that processing and cooking methods have on meat’s role in health and aging, enhancing our understanding of how specific types of meat and their preparation affect the aging process, providing a theoretical basis for dietary strategies aimed at delaying aging and enhancing quality of life.

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Causal Relationship between Meat Intake and Biological Aging: Evidence from Mendelian Randomization Analysis

Liu,

Deng,

Liu

et al. 2024

Nutrients

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show abstract

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Red meat and type 2 diabetes: do methodological advancements sufficiently increase the certainty of evidence?

Cited by 1 publication

References 14 publications

Causal Relationship between Meat Intake and Biological Aging: Evidence from Mendelian Randomization Analysis

Causal Relationship between Meat Intake and Biological Aging: Evidence from Mendelian Randomization Analysis

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