Cited by 430Telomeres, Telomerase, and SenescenceGenetics, Aging, and Longevity in Model OrganismsEpigenetics and DNA Methylation

Increased telomerase activity and comprehensive lifestyle changes: a pilot study

Ornish, Dean, Lin, Jue, Daubenmier, Jennifer, Weidner, Gerdi, Epel, Elissa, Kemp, Colleen, Magbanua, Mark Jesus M, Marlin, Ruth +3 more·2008·The Lancet Oncology

Abstract

Background Telomeres are protective DNA-protein complexes at the end of linear chromosomes that promote chromosomal stability. Telomere shortness in human beings is emerging as a prognostic marker of disease risk, progression, and premature mortality in many types of cancer, including breast, prostate, colorectal, bladder, head and neck, lung, and renal cell. Telomere shortening is counteracted by the cellular enzyme telomerase. Lifestyle factors known to promote cancer and cardiovascular disease might also adversely affect telomerase function. However, previous studies have not addressed whether improvements in nutrition and lifestyle are associated with increases in telomerase activity. We aimed to assess whether 3 months of intensive lifestyle changes increased telomerase activity in peripheral blood mononuclear cells (PBMC).Methods 30 men with biopsy-diagnosed low-risk prostate cancer were asked to make comprehensive lifestyle changes. The primary endpoint was telomerase enzymatic activity per viable cell, measured at baseline and after 3 months. 24 patients had sufficient PBMCs needed for longitudinal analysis. This study is registered on the ClinicalTrials.gov website, number NCT00739791.Findings PBMC telomerase activity expressed as natural logarithms increased from 2.00 (SD 0.44) to 2.22 (SD 0.49; p=0.031). Raw values of telomerase increased from 8.05 (SD 3.50) standard arbitrary units to 10.38 (SD 6.01) standard arbitrary units. The increases in telomerase activity were significantly associated with decreases in low-density lipoprotein (LDL) cholesterol (r=-0.36, p=0.041) and decreases in psychological distress (r=-0.35, p=0.047).Interpretation Comprehensive lifestyle changes significantly increase telomerase activity and consequently telomere maintenance capacity in human immune-system cells. Given this finding and the pilot nature of this study, we report these increases in telomerase activity as a significant association rather than inferring causation. Larger randomised controlled trials are warranted to confirm the findings of this study.

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Crossref · 10.1016/s1470-2045(08)70234-1

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  • Ornish et al. (2008) had a lack of a control group, only 30 of 126 eligible patients agreed to participate, and all participants were male, which may affect generalizability.

    “A potential limitation of this study was the lack of a control group and the fact that only 30 of 126 eligible patients agreed to participate in the study after learning the details and the fact that all participants were male, which may affect generalizability of the findings.”
  • Ornish et al. (2008) showed in a pilot non-randomized study in low-risk prostate cancer patients that three months of comprehensive lifestyle changes were associated with significant increases in PBMC basal TA accompanied by a decrease in psychological distress.

    “In a pilot non-randomized study in low-risk prostate cancer patients, Ornish et al. (2008) showed that three-months of comprehensive lifestyle changes were associated with significant increases in PBMC basal TA accompanied by a decrease in psychological distress.”

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Authors
Ornish, D., Lin, J., Daubenmier, J., Weidner, G., Epel, E., Kemp, C., Magbanua, M. J. M., Marlin, R., Yglecias, L., Carroll, P. R., & Blackburn, E. H.
Affiliations
  • University of California, San Francisco (US)
  • Preventive Medicine Research Institute (US)
Corresponding author
Ornish, Dean
Venue
The Lancet Oncology
Publisher
Elsevier BV
Published
2008-11
Volume
9
Issue
11
Pages
1048-1057
ISSN
1470-2045 (ISSN-L)
OpenAlex
W2150791953
Cited by
430
References
51
Citations by year
2026: 3 · 2025: 7 · 2024: 13 · 2023: 15 · 2022: 15 · 2021: 14 · 2020: 31 · 2019: 27 · 2018: 22 · 2017: 28 · 2016: 32 · 2015: 33 · 2014: 29 · 2013: 34 · 2012: 34
FWCI
20.54
Type
journal article
Language
en
Update notices
erratum (2008-12-01)
Open access
closed
Locations
  • The Lancet Oncology (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Center for Complementary and Integrative Health (K01AT004199)
Topics
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
Keywords
telomerase activity, lifestyle intervention, prostate cancer, telomere maintenance, peripheral blood mononuclear cells, LDL cholesterol, psychological distress, nutrition, cancer risk biomarkers, telomere shortening
MeSH terms
Aged, Aged, 80 and over, Humans, Leukocytes, Mononuclear, Longitudinal Studies, Male, Middle Aged, Pilot Projects, Prostatic Neoplasms, Regression Analysis, Relaxation Therapy, Exercise, Multivariate Analysis, Telomere, Cellular Senescence, Diet, Fat-Restricted, Telomerase, Risk Reduction Behavior

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