Today it is important to study the problem of male infertility, as well as to identify the factors of its occurrence. The purpose of the work is to evaluate the overall picture of the quality of ejaculate during the last 50 years and to determine the reasons for such changes. More than 40 literary sources were published for thorough analysis in the period 1984–2018 (the share of new references is 20%). There was a decrease in sperm concentration by 1.5% / year, total sperm count — 1.6% / year, total sperm motility — 0.4% / year, decrease in the percentage of progressive motility sperm by 5.5% / year and with normal morphology 2.2% / year. One of the main reasons for the deterioration of sperm quality is the impact of negative environmental factors — chemical and radioactive contamination, as well as electromagnetic radiation. Among the most toxic substances are the heavy metals, pesticides, bisphenol A, phthalates, polychlorinated biphenyls, dioxin and its derivatives. Thus, over the last 50 years there has been a decline in the qualitative and quantitative indices of ejaculate men worldwide. One of the reasons is the worsening environmental situation.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.