Healthy Diet Linked to Higher Klotho Protein in Middle-Aged and Older Adults

Jim Crocker
10th May, 2025

Healthy Diet Linked to Higher Klotho Protein in Middle-Aged and Older Adults

Linear fitting (A) and smooth curve analysis (B) reveal a positive correlation where serum Klotho levels increase with higher Alternative Healthy Eating Index scores, supporting the study's finding that healthy diet quality is linked to this anti-aging biomarker.

Image adapted from: Zheng et al. / CC BY (Source)

Key Findings

  • Researchers from Jieyang People’s Hospital found that in middle-aged and elderly Americans, healthier diets are linked to higher levels of an anti-aging protein called S-Klotho
  • People with better diet quality scores consistently had increased S-Klotho levels, indicating that eating well may boost this anti-aging protein
  • This positive relationship between diet and S-Klotho was observed across different age, gender, and racial groups, emphasizing the role of healthy eating in promoting healthier aging
Aging is an inevitable process that affects cellular functions and increases the risk of chronic diseases, placing a significant burden on healthcare systems. Understanding the factors that can mitigate the effects of aging is crucial for enhancing both lifespan and healthspan—the period of life spent in good health[2][3]. Recent research conducted by Jieyang People’s Hospital explores the relationship between dietary habits and a key anti-aging protein, serum soluble Klotho (S-Klotho), shedding light on potential dietary strategies to promote healthier aging. The Alternative Healthy Eating Index (AHEI-2010) is a tool used to assess the quality of an individual's diet based on the consumption of various food groups and nutrients associated with reduced risk of chronic diseases[1]. S-Klotho, on the other hand, is a protein known for its anti-aging properties. It exists in both membrane-bound and soluble forms, with the soluble form circulating in the blood and urine, playing a role in regulating several cellular processes linked to aging[4][5]. Despite the established benefits of both AHEI and S-Klotho individually, there has been limited research on how dietary quality, as measured by AHEI-2010, relates to levels of S-Klotho in the body. In the study conducted by Jieyang People’s Hospital, researchers utilized data from the National Health and Nutrition Examination Survey (NHANES) spanning from 2011 to 2016. The study included 6,305 participants aged between 40 and 79 years, representing a diverse middle-aged and elderly population in the United States. The primary objective was to evaluate whether adherence to a healthy diet, as indicated by a higher AHEI-2010 score, is associated with increased levels of S-Klotho. To achieve this, the researchers employed multivariate regression models, a statistical method that adjusts for various confounding factors to isolate the relationship between diet and S-Klotho levels. Additionally, they performed curve fitting to investigate whether the association between AHEI-2010 and S-Klotho was linear or exhibited a different pattern. Subgroup analyses were also conducted to determine if the relationship remained consistent across different demographic groups. The findings revealed a positive correlation between AHEI-2010 scores and S-Klotho levels. Specifically, individuals in the highest category of AHEI-2010 (>47.9) had significantly higher S-Klotho levels compared to those in the lowest category (<31.9). The analysis demonstrated that as the AHEI-2010 score increased, indicating a healthier diet, S-Klotho levels also rose in a linear fashion. This suggests that better dietary quality is consistently associated with higher levels of this anti-aging protein. These results are particularly noteworthy in the context of previous research highlighting the role of Klotho in aging. Studies have shown that higher levels of Klotho are linked to improved metabolic processes and reduced risk of age-related diseases[4][5]. By establishing a connection between diet and S-Klotho levels, the current study provides valuable insights into how nutritional interventions might influence biological aging mechanisms. The methodology employed in this study ensures a robust analysis of the data. By using a large, nationally representative sample and adjusting for multiple potential confounders, the researchers increased the reliability of their findings. The linear relationship observed through curve fitting further supports the notion that dietary improvements can have a direct and proportional impact on S-Klotho levels. While the study presents compelling evidence of an association, it also acknowledges the need for further research to determine causality. Understanding the specific dietary components that most significantly influence S-Klotho levels could lead to targeted nutritional strategies for promoting healthy aging. Additionally, exploring the underlying biological mechanisms through which diet affects Klotho expression and function would provide deeper insights into the aging process. Incorporating the findings from this study with previous research, it becomes evident that lifestyle factors, particularly diet, play a crucial role in modulating key proteins involved in aging[2][3]. Enhancing dietary quality as measured by AHEI-2010 could be a viable approach to increase S-Klotho levels, potentially mitigating some of the cellular and molecular declines associated with aging. This aligns with earlier studies that have emphasized the importance of nutrient sensing and metabolic regulation in longevity[2][3]. Moreover, the potential to upregulate Klotho through dietary means complements other strategies aimed at increasing its levels, such as pharmacological interventions and gene therapy[5]. Combining optimal dietary practices with these emerging treatments could offer a multifaceted approach to combating the effects of aging and extending healthspan. In conclusion, the study from Jieyang People’s Hospital bridges a gap in our understanding of how diet influences anti-aging proteins like S-Klotho. By demonstrating a positive and linear relationship between the Alternative Healthy Eating Index and S-Klotho levels, it opens new avenues for nutritional interventions aimed at promoting healthier aging. Future research building on these findings could lead to comprehensive strategies that integrate diet with other anti-aging therapies, ultimately enhancing quality of life for the aging population.

NutritionHealthFitness And Diet

References

Main Study

1) The positive relationship between the Alternative Healthy Diet Index and serum klotho levels: A cross-sectional analysis in middle-to-older Americans

Published 7th May, 2025

https://doi.org/10.1371/journal.pone.0323228

Related Studies

2) Molecular mechanisms of aging and anti-aging strategies.

https://doi.org/10.1186/s12964-024-01663-1

3) Current nutritional and pharmacological anti-aging interventions.

https://doi.org/10.1016/j.bbadis.2019.165612

5) The current and emerging Klotho-enhancement strategies.

https://doi.org/10.1016/j.bbrc.2023.149357


Related Articles

An unhandled error has occurred. Reload 🗙