Phthalate exposure, even below US EPA reference doses, was associated with semen quality and reproductive hormones: Prospective MARHCS study in general population
Abstract
Background Environment-Protection-Agency Reference Doses (EPA RfDs) for phthalate intakes are based on limited evidence, especially regarding low-dose male-reproductive toxicity. This study investigates the association between phthalate exposure and semen parameters and reproductive hormones in a general population with low phthalate exposure compared to the EPA RfDs. Methods The MARHCS (Male-Reproductive-Health-in-Chongqing-College-Students) cohort recruited 796 male students, who experienced a relocation of campuses and shifting environmental exposure. Urine, semen and blood before and after the relocation was collected and investigated for: (1) the associations between 13 urinary phthalate metabolites and 11 semen/hormone outcomes (five semen parameters including semen volume, sperm concentration, total sperm number, progressive motility, normal morphology) and six serum reproductive hormones including estradiol, follicle-stimulating hormone, luteinizing hormone, prolactin, progesterone, testosterone; (2) re-analysis of the metabolite-outcome associations in the subjects with estimated phthalate intakes below the RfDs; (3) a change in phthalate metabolites and change in semen/hormone outcomes after the relocation; (4) the association between these changes. Results (1) All but two semen/hormone outcomes were associated with at least one phthalate metabolite, e.g., each quartile monoethyl phthalate was associated with a 5.3%, 5.7% and 2.6% decrease of sperm concentration, to…
Integrity signals
Registry
Cites
Statistics
Claims the paper makes
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
Outcomes are inconsistent for studies correlating lifestyle and environmental exposures with sperm morphology.
“Likewise, outcomes are inconsistent for studies correlating lifestyle and environmental exposures with sperm morphology (11, 12, 13, 14, 15).”
From Poor reproducibility of percentage of normally shaped sperm using the World Health Organization Fifth Edition strict grading criteria (2022) · cites this paper as [11]
Cites
Occurrence of Phthalate Metabolites in Human Urine from Several Asian Countries
Guo, Y., Alomirah, H., Cho, H.-S., Minh, T. B., Mohd, M. A., Nakata, H., & Kannan, K. (2011) · Environmental Science & Technology · doi:10.1021/es103879m · Cited by 278 · see citing works
Flagged first, then by citations
Cited by
Sorted by citations
A Review of Biomonitoring of Phthalate Exposures
Wang, Y., Zhu, H., & Kannan, K. (2019) · Toxics · doi:10.3390/toxics7020021 · Cited by 755 · see citing works
Zou, P., Sun, L., Yang, W., Zeng, Y., Chen, Q., Yang, H., Zhou, N., Zhang, G., Liu, J., Li, Y., et al. (2018) · Psychiatry Research · doi:10.1016/j.psychres.2018.09.019 · Cited by 90 · see citing works
Self-citationBaker, K. C., Steiner, A. Z., Hansen, K. R., Barnhart, K. T., Cedars, M. I., Legro, R. S., Diamond, M. P., Krawetz, S. A., Usadi, R., Baker, V. L., et al. (2022) · F&S Reports · doi:10.1016/j.xfre.2022.03.003 · Cited by 14 · see citing works
- Authors
- Chen, Q., Yang, H., Zhou, N., Sun, L., Bao, H., Tan, L., Chen, H., Ling, X., Zhang, G., Huang, L., Li, L., Ma, M., Yang, H., Wang, X., Zou, P., Peng, K., Liu, T., Shi, X., Feng, D., Zhou, Z., Ao, L., Cui, Z., & Cao, J.
- Affiliations
- Army Medical University (CN)
- Chongqing Population and Family Planning Science and Technology Research Institute (CN)
- National Institute of Measurement and Testing Technology (CN)
- Corresponding author
- Cao, Jia
- ORCID
- Venue
- Environment International
- Publisher
- Elsevier BV
- Published
- 2017-07
- Volume
- 104
- Pages
- 58-68
- ISSN
- 0160-4120 (ISSN-L)
- OpenAlex
- W2609083053
- Cited by
- 75
- References
- 1
- Citations by year
- 2026: 8 · 2025: 9 · 2024: 7 · 2023: 4 · 2022: 10 · 2021: 12 · 2020: 8 · 2019: 6 · 2018: 9 · 2017: 2
- FWCI
- 3.53
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Environment International (publishedVersion)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
- Funders
- National Natural Science Foundation of China (81130051, 81402660, 81202276, 81502788)
- National Scientific and Technological Support Program (2013BAI12B02)
- Topics
- Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Effects and risks of endocrine disrupting chemicals
- Health Sciences › Medicine › Reproductive Medicine › Sperm and Testicular Function
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Pesticide Exposure and Toxicity
- Keywords
- phthalate exposure, semen quality, reproductive hormones, urinary phthalate metabolites, monoethyl phthalate, mono(2-ethylhexyl) phthalate, sperm concentration, sperm motility, sperm morphology, male reproductive toxicity, estradiol, testosterone, luteinizing hormone, university students
- MeSH terms
- Adult, Environmental Monitoring, Environmental Pollutants, Hormones, Humans, Male, Phthalic Acids, Prospective Studies, Semen, Sperm Count, Spermatozoa, United States, United States Environmental Protection Agency, Semen Analysis, Young Adult
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review