• Acta clinica Croatica · Dec 2020

    THE (A)SYMMETRY OF THE MALE GRAYING BEARD HAIRS AS AN INDICATION OF THE PROGRAMMED AGING PROCESS.

    • Borut Poljsak, Raja Dahmane, Metka Adamič, Robert Sotler, Tina Levec, Doroteja Pavan Jukić, Cecilija Rotim, Tomislav Jukić, and Andrej Starc.
    • 1Laboratory for Oxidative Stress Research, Faculty of Health Sciences, University of Ljubljana, Ljubljana, Slovenia; 2Department of Biomedicine in Health Care Division, Faculty of Health Sciences, Faculty of Medicine, Institute of Anatomy, University of Ljubljana, Ljubljana, Slovenia; 3Metka Adamič Dermatology Clinic, Ljubljana, Slovenia; 4Josip Juraj Strossmayer University of Osijek, Faculty of Medicine, Department of Gynecology and Obstetrics, Osijek, Croatia; 5Dr Andrija Štampar Teaching Institute of Public Health, Zagreb, Croatia; 6Josip Juraj Strossmayer University of Osijek, Faculty of Medicine, Department of Internal Medicine, Family Medicine and History of Medicine, Osijek, Croatia.
    • Acta Clin Croat. 2020 Dec 1; 59 (4): 650-660.

    AbstractAging interventions will be ineffective if we do not understand the basic principles of aging. Currently, there is no consensus on the issue whether aging is programmed or not. The hypothesis presented in this article indicates that aging (at least graying of male hairs) is programmed. This hypothesis is supported by the symmetry of the graying of male beard hairs. According to stochastic theories of aging, aging is a passive non-programmed process where random dispersion of graying hairs should result. On the contrary, programmed theories of aging would predict that there should be symmetry on the left and right parts of the face showing the same proportion, pattern and time of appearance of graying hairs.

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