Aging and lifespan depend on a third factor, which is a stochastic one, as well as genetic and environmental factors. The author had investigated significance of the third factor. He proposed the lifespan equation involving an image so that an individual fluctuates between life and death. To demonstrate such a fluctuation theory of life and death, a model animal of the nematode
Caenorhabditis elegans was used in the previous work. However, according to Jungian psychology, life is thought to consist of psychic and biological life, that is, it is also to be a multidimensional existence. Thus, in this study, the author asked what exists at a point of contact between the both life in relation to aging and lifespan. Consequently, taking a level of consciousness into account, it is concluded that the individuation process may be based on aging through a body.
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