Pheromones are ectohormones that play an important role in communication and behavior. Pheromones and pheromone receptor genes are important in mice and other mammals that rely heavily on pheromone cues to survive. Although there is controversy about whether pheromones and pheromone receptor genes have the same importance or are even active in humans, there are some hints that they might have roles in sociosexual behavior and mental disorders. The aim of this qualitative review was to provide an overview of the state of the art regarding pheromones and pheromone receptors in humans and their possible implications in human physiology and pathology. An electronic search was conducted in MEDLINE, PubMed and Scopus databases for articles published in English up to December 2018. The search concerned a possible role of pheromones and pheromone receptors in humans with implications for sociosexual behavior, mental disorders, the menstrual cycle and nutrition. Pheromone communication in humans has not been definitively demonstrated. However, the potential ability of putative pheromones to activate the hypothalamus, which controls the release of many hormones, suggests they could have a role in systemic functions in humans. Future confirmation of the effects of pheromones and pheromone receptors in humans could be useful in the prevention and treatment of various human disorders.
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