Research into epigenetic variation is crucial in understanding how the environment influences human health. Scientists from the Institut Pasteur, the CNRS, Karolinska Institutet (Sweden) and the University of British Columbia (Canada) have shed light on the factors influencing this variability. They particularly focused on the epigenetic effects of age and of a common viral infection (cytomegalovirus). Their study was conducted on a cohort of nearly 1,000 healthy patients.

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