Although the specific mechanisms by which chronotype may promote the development of eating disorders are not known, it is important to know the specific mechanisms by which chronotype may promote the development of eating disorders or disordered eating, certain underlying mechanisms or influence factors have been described in the literature, such as clock genes, neuroendocrinology, the light/dark cycle, brain characteristics, sleep disorders psychological factors, and social factors [37]. This evidence concerns the gene CLOCK and sleep disorder.