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Association between dietary collagen Consumption and Telomere Length: National Health and Nutrition Examination Survey

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Health 2023年第10期15卷 1096-1115页

作者： Huifeng Jin Rolando L. Maddela Robert A. Sinnott Research and Development USANA Health Sciences Inc. Salt Lake City USA

Background: Bioactive peptides derived from hydrolyzed collagen have broad physiological functions and beneficial effects on human health, ranging from reducing skin aging to modifying lipid metabolism. Telomere length shortening is an established biomarker of cellular aging. It is not known if collagen consumption is associated with telomere length protection. Our purpose was to investigate the relationship between dietary collagen consumption and telomere length in a nationally representative US adult population. Methods: We analyzed the data of 6173 adults aged 20 - 84 from the National Health and Nutrition Examination Survey (NHANES) 1999-2002. Multivariable linear regression and a generalized additive model with smoothing plot were used to assess the association between the total collagen consumption and log-transformed leukocyte telomere length (LTL). Results: Compared with the lowest quartile of total collagen (Q1), we found that the second quartile of collagen (Q2) consumption (1.36 - 3.40 g/1000kcal) was positively associated with telomere length (β: 0.017;95% CI: 0.006, 0.028;P = 0.022) in the females while no association in the males (β: −0.003;95% CI: −0.019, 0.012;P = 0.678) and overall population (β: 0.008;95% CI: −0.002, 0.018;P = 0.141). The association in the females is nonlinear with an inflection point of 2.5 g/1000kcal (P for non-linearity: Conclusion: In conclusion, moderate dietary collagen has a positive and nonlinear association with telomere length in US females, while no significant associations were found in the males and the overall population.

关键词： Telomere Length dietary collagen NHANES Linear Regression

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