To examine the association of oral contraceptive (OC) use, intrauterine device (IUD) use, and tubal ligation with plasma levels of inflammatory biomarkers, considering the impact of body mass index and menopausal status.
Key Findings:
No significant differences in inflammatory markers between ever and never users of OC, IUD, or tubal ligation after adjustments.
CRP levels decreased by 30.4% with every 5 years since initial IUD use (P-trend = .03).
CRP levels increased by 9.9% with every 5 years of OC use (P-trend < .0001).
Inflammatory responses varied by body mass index and menopausal status, indicating a need for further investigation into these factors.
Interpretation:
IUD use and tubal ligation do not correlate with increased long-term inflammatory markers, while prolonged OC use may elevate inflammation, potentially diminishing its protective effect against ovarian cancer over time, highlighting the need for careful consideration in contraceptive choices.
Limitations:
Type of IUD or OC was not specified in the cohort.
Limited to self-reported contraceptive use, which may introduce bias, and potential confounding factors.
Conclusion:
The findings suggest that while IUDs and tubal ligation are not associated with increased inflammation, long-term OC use may contribute to higher inflammation levels, which could impact ovarian cancer risk.
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