Atavistic Theory of Cancer

The atavistic theory of cancer is an evolutionary framework proposing that cancer occurs when multicellular cells revert to ancient, unicellular survival and proliferation programs. Atavistic theory states that cancer is not a collection of random broken biological processes, but rather a coordinated ancestral mode of existence that cells enter under environmental stress. According to this view, oncogenic triggers disrupt the regulatory networks that normally suppress primitive traits, leading the cell to reactivate genetic machinery inherited from unicellular or early colonial ancestors. Consequently, cancer cells exhibit behaviors characteristic of single-celled organisms, including rapid division, motility, and a preference for anaerobic