Authors: Nikolaos Mavritsakis1, Camelia-Manuela Mîrza2, Simona Tache2
1“1 Decembrie 1918” University, Dept. of Physical Education and Sports, Alba-Iulia, Romania
2“Iuliu Haţieganu” University of Medicine and Pharmacy, Dept. of Functional Sciences, Cluj-Napoca, Romania
Aging is a complex bio-psycho-social process which could be characterized as universal, intrinsic, progressive and harmful. There are more than 300 theories about aging. Biologists, sociologists and psychologists have proposed different theories about the aging process. All the theories regarding aging are necessary and require the composition of a composite, comprehensive theory, which should include the aspects described in them. One of the most prominent theories of aging is the free radical theory, which explains aging as due to the oxidative stress generated by the oxygen catabolism products.
The control and prevention of aging, in order to prolong the life span and increase the quality of life, can be done through a rigorous program: moderate physical effort, nutritional and non-nutritional antioxidants, reduction of exogenous sources of reactive oxygen species.
Key words: aging, biological theories, social theories, psychological theories