This article aims to present and discuss the concept of biological alterity. From a human point of view this issue is expressed beyond the dimension approached by biology. However, the ability to make conscious decisions and be constituted in the relationship with the other would have a biological root and would be embedded in the existence of every living being. Recent biology and philosophy studies have shown new ways of thinking about the relation among living beings from the point of view of ontogeny and co-evolution. The human condition has primarily biological origins. Addressing alterity as a peculiar nature of the living beings may indicate a different and integrated way of understanding human body as well as the ethical issues related to life and health practices.
Biology; Individuation; Subjectivity; Alterity; Co-evolution