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Evaluation of the Impact of Environmental Pollutants on the Sex Ratio: A Systematic Review Publisher



Azizi B1 ; Najafi E2 ; Aghamohammadi V3 ; Nasiri K4 ; Moghadam HR2 ; Bazyar H5 ; Hosseini A6 ; Sharifi E6 ; Salari F6
Authors
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Authors Affiliations
  1. 1. Qom University of Medical Sciences, Qom, Iran
  2. 2. Department of Public Health, Khalkhal University of Medical Sciences, Khalkhal, Iran
  3. 3. Department of Nutrition, Khalkhal University of Medical Science, Khalkhal, Iran
  4. 4. Department of Medical-Surgical Nursing, Khalkhal University of Medical Sciences, Khalkhal, Iran
  5. 5. Sirjan School of Medical Sciences, Sirjan, Iran
  6. 6. Tehran University of Medical Sciences, Tehran, Iran

Source: Reviews on Environmental Health Published:2024


Abstract

In several industrialized countries, there has been a report of a decrease in the proportion of male births. The current study is designed to perform a systematic review and present a comprehensive summary of current epidemiological evidence of an association between exposure to the mentioned pollutants and sex ratio. The present systematic review was executed according to the PRISMA protocol. A comprehensive online search was performed in PubMed Medline, Scopus, Web of Science, Embase databases, Google Scholar, and the World Health Organization databases from 2000 to September 2023. After searching all databases, 20 articles were included in this systematic review. Regarding the studied pollutants found that exposure to increased PM10, PM2.5, and Nitrogen dioxide (NO2) levels was significantly associated with the sex ratio. Both maternal Benzophenone (BP)-2 and paternal BP-2 were significantly associated with an excess of female births. Finally, it must be said that the effect of some environmental pollutants on the sex ratio is undeniable. However, the sex ratio is the result of multiple factors that interact simultaneously during pregnancy. Additional research is required to examine the mechanisms responsible for the change in sex ratio. © 2024 Walter de Gruyter GmbH, Berlin/Boston.