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Association between body temperature and leukocyte telomere length in Korean middle-aged and older adults
Carolina García-García, Chol Shin, Inkyung Baik
Epidemiol Health. 2021;43:e2021063.   Published online September 8, 2021
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AbstractAbstract AbstractSummary PDFSupplementary Material
Data on associations between body temperature (BT) and leukocyte telomere length (LTL), which has been widely used as a biomarker of cellular senescence in recent epidemiological studies, are limited. Therefore, this study aimed to explore the associations between a normal BT range (35.0-37.5°C) and LTL via 6-year longitudinal observations of 2,004 male and female adults aged 50 or older.
BT was obtained by measuring the tympanic temperature, and relative LTL was determined by real-time polymerase chain reaction. Robust regression analysis was used to evaluate the association between the baseline and follow-up LTL values and their differences.
A significant inverse association was found between BT and LTL at baseline. The regression coefficient estimate was -0.03 (95% confidence interval, -0.07 to -0.001; p<0.05). This association was stronger in participants with a body mass index >25 kg/m<sup>2</sup> and males (p<0.01). However, there were no associations between BT and LTL at follow-up or BT and 6-year longitudinal differences in LTL.
These findings suggest that having a high BT between 35°C and 37.5°C (95°F and 99°F) may be detrimental for obese individuals in terms of biological aging.
Korean summary
본 역학 연구는 한국 성인 2,004명을 연구대상자로 하여 2011-2012년에 고막 체온을 측정하고 전혈을 채취하여 백혈구 텔로미어 길이를 분석하였으며 이러한 분석을 2017-2018년에 반복하여 6년 동안의 백혈구 텔로미어 길이 변화를 계산하였다. 고막 체온과 초기 텔로미어 길이의 관련성을 분석한 결과, 정상 체온 범위 내 체온이 높을수록 텔로미어 길이가 유의적으로 짧아지는 생리적 노화 상태와 관련된 것으로 나타났으며, 이러한 결과는 비만할 경우 더욱 분명하게 나타났다. 본 연구 결과를 통해 비만 시 체내 열발생과 관련된 노화 진행이 체중 감소를 통해 지연될 수 있는 가능성이 제시되었다.
Key Message
In an epidemiological study including Korean adults, a relatively higher normal body temperature between 35°C to 37.5°C was found to be associated with shorter leukocyte telomere length, a cellular senescence biomarker. In particular, this association was observed to be stronger among obese participants, suggesting that attaining normal body weight may be beneficial for anti-aging.


Citations to this article as recorded by  
  • Higher Daily Air Temperature Is Associated with Shorter Leukocyte Telomere Length: KORA F3 and KORA F4
    Wenli Ni, Kathrin Wolf, Susanne Breitner, Siqi Zhang, Nikolaos Nikolaou, Cavin K. Ward-Caviness, Melanie Waldenberger, Christian Gieger, Annette Peters, Alexandra Schneider
    Environmental Science & Technology.2022; 56(24): 17815.     CrossRef

Epidemiol Health : Epidemiology and Health