[Biological clocks of food]

For centuries it has been observed in living beings the existence of endogenous rhythms that prepare and adapt the physiology of the organism to the different daily and seasonal phases. These internal clocks regulate an enormous variety of physiological systems that mark their activity. Because of this, these complex systems are subject to strict genetic and molecular regulations, which cause these repetitive patterns to be maintained in the absence of external stimuli. Circadian dysfunctions have been linked to sleep disorders, psychological problems, neurological diseases, metabolic disorders and obesity. Maintaining a daily routine related to rest, physical activity and food keeps these body clocks synchronized, helps control body weight and optimizes certain medical treatments. Diet is one of the external factors that most influences the synchrony of these endogenous clocks, so that a correct feeding at the right times can benefit our health.