Evidence map›Paper›PMID 26675298›Full record

ArticleEvolution, medicine, and public health2015

Links among inflammation, sexual activity and ovulation: Evolutionary trade-offs and clinical implications.

Tierney K Lorenz, Carol M Worthman, Virginia J Vitzthum

Open access · goldAbstract read
In one paragraph

Article in Evolution, medicine, and public health, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
5.1field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

24 citing papers in PubMed, 47 citations in OpenAlex.

  1. Article
  2. Article
  3. Inflammation and Ovarian Function in Reproductive-Aged Women.American journal of human biology : the official journal of the Human Biology Council · 2025
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Inflammation Predicts Sexual Arousability in Healthy Women.Comprehensive psychoneuroendocrinology · 2021
    Article
  12. Article
  13. Article
  14. Inflammatory Markers in Dysmenorrhea and Therapeutic Options.International journal of environmental research and public health · 2020
    Review
  15. Article
  16. Article
  17. Article
  18. Observational
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Tierney K LorenzThe Kinsey Institute, Indiana University, Morrison Hall 313, 1165 E 3rd Street, Bloomington, IN 47405, USA; The Center for Integrative Study of Animal Behavior, Indiana University, Bloomington, IN 47405, USA; lorenzt@indiana.edu.
Carol M WorthmanLaboratory for Comparative Human Biology, Department of Anthropology, Emory University, 214 Anthropology, 1557 Dickey Drive, Atlanta, GA 30322, USA;
Virginia J VitzthumThe Kinsey Institute, Indiana University, Morrison Hall 313, 1165 E 3rd Street, Bloomington, IN 47405, USA; The Center for Integrative Study of Animal Behavior, Indiana University, Bloomington, IN 47405, USA; Evolutionary Anthropology Laboratory, Department of Anthropology, Indiana University, Student Building 130, 701 E. Kirkwood Avenue, Bloomington, IN 47405, USA.
Emory University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

objectivesWe examined a mechanism that may coordinate trade-offs between reproduction and immune response in healthy women, namely, changes in inflammation across the ovarian cycle. METHODOLOGY: We investigated C-reactive protein (CRP), an inflammation marker, across two consecutive ovarian cycles in 61 Bolivian women. Participants provided saliva samples every other day, and dried blood spots on 5-6 days spread across weeks 2-3 of each cycle. Cycles were characterized as ovulatory/anovulatory based on profiles of reproductive hormones. Participants also reported whether they were sexually partnered with a male or sexually abstinent during the study.

resultsHigh early-cycle, but not late-cycle, CRP was associated with anovulation. High inflammation at the end of one cycle was not associated with anovulation in the subsequent cycle. Among ovulatory cycles, women with sexual partners had significantly lower CRP at midcycle, and higher CRP at follicular and luteal phases; in contrast, sexually abstinent women had little cycle-related change in CRP. In anovulatory cycles, partnership had no effect on CRP. CRP varied significantly with socioeconomic status (higher in better-off than in poorer women). CONCLUSIONS AND IMPLICATIONS: These findings suggest that the cycle-specific effect of inflammation on ovarian function may be a flexible, adaptive mechanism for managing trade-offs between reproduction and immunity. Sociosexual behavior may moderate changes in inflammation across the ovarian cycle, suggesting that these shifts represent evolved mechanisms to manage the trade-offs between reproduction and immunity. Clinically, these findings support considering both menstrual cycle phase and sexual activity in evaluations of pre-menopausal women's CRP concentrations.

Identifiers

PMID26675298
PMCPMC4681377
OpenAlexW2217646035

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.