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From Prenatal Exposure to Adult Sexual Dysfunction: The Impact of Plastic-Derived Endocrine Disruptors on Testosterone Homeostasis and Erectile Function
Summary
Everyday plastics — found in food packaging, containers, and countless consumer products — contain chemicals that can interfere with hormone signaling, and this review pulls together existing research suggesting they may lower testosterone and contribute to erectile dysfunction. The disruption seems to start as early as the womb, potentially affecting how the male reproductive system develops, and continues into adulthood by damaging blood vessels, promoting inflammation, and altering metabolism. While more research is needed to confirm direct cause-and-effect in humans, this is a good reminder to minimize plastic exposure where possible, especially around food and drink.
Bisphenols, phthalates, and other plastic-associated compounds are endocrine-disrupting chemicals (EDCs), common environmental contaminants that can disrupt hormonal homeostasis. Human exposure to such chemicals occurs mainly through food packaging, consumer goods, medical devices, and the environment, starting right from early development stages up to adulthood. These chemicals might cause damage to male reproductive systems as a result of being anti-androgens and estrogenic chemicals. However, the proper development of the male reproductive system requires well-regulated hormonal signaling pathways; hence, exposure to such compounds during the developmental stages poses a great risk. Environmental exposure to plastics during fetal development may influence the development of the testes, reduce the function of the Leydig cells, disrupt steroidogenesis, and produce epigenetic modifications, as documented through studies. This has been shown to increase the risk of developing reproductive disorders and reduce the production of testosterone. Therefore, one of the pathophysiological links between endocrine disruptor exposure and ED might be testosterone deficiency. Apart from disrupting testosterone production, the plastic-sourced EDCs could influence various physiological processes associated with erectile performance, such as those related to vasculature, inflammation, metabolism, and endocrinology. In this review, a comprehensive overview of the scientific data on the effect of plastic-based EDCs on testosterone regulation and male reproductive health has been provided. The role of developmental programming, endocrine disruption, oxidative stress, epigenetics, and vascular dysfunction has been explored in detail. Moreover, the possible involvement of micro- and nanoplastics has also been reviewed. From the data that is currently available, there seems to be a physiologically plausible association between plastic-based contaminants, testosterone dysregulation, and adverse reproductive outcomes.