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Telomeres—tandem repeats at the ends of mammalian chromosomes—serve as clocks that pace cellular aging in vitro and in vivo and they may be a major determinant of human aging, not only at the cellular level but also at the organ and perhaps systemic levels. In industrialized nations, pulse pressure rises with age, and this might serve as a phenotype of biologic aging of the vasculature. In this study, investigators explored the relationship between telomere length in white blood cells and systolic/diastolic and pulse pressures. Telomere lengths of 37 female volunteers who were 50 years of age were measured with the fiber fluorescence in situ hybridization technique. With the use of Spearman's correlation coefficient, no relationship was found between pulse pressure, systolic blood pressure, diastolic blood pressure, body mass index, and telomere length. The results suggest that telomere length is not an indicator of blood pressure dynamics.