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the claim

Oral contraception is considered a risk factor for the formation of deep venous thrombosis in women.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
4 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that oral contraception is considered a risk factor for the formation of deep venous thrombosis in women?

Yes. Oral contraceptives are widely documented in medical literature as an established risk factor for deep venous thrombosis and venous thromboembolism in women, primarily due to estrogen-induced hypercoagulability.

Verdict: SUPPORTED · 4 sources for, 0 against · Last checked

The analysis

The claim is a specific, empirical medical statement that is strongly supported by multiple retrieved reviews and studies showing that oral contraceptives increase the risk of deep venous thrombosis and venous thromboembolism. No papers contradict this relationship.

Evidence for · 4
Combined Oral Contraceptives and the Risk of Thrombosis.
2025
Combined oral contraceptives are widely associated with the risk of venous thrombosis through various pathogenetic mechanisms.
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J, K., V, B., G, S., M, T., JC, G., I, E., G, G., D, K., M, K., A, T., A, K., I, H., F, Y., & A, M. (2025). Combined Oral Contraceptives and the Risk of Thrombosis.. doi.org. https://doi.org/10.3390/ijms262211010

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More for · 3
Neck-vein thrombosis during spaceflight.
2026
Oral contraceptives are noted as potential promoters of thrombotic risk in female astronauts.
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U, L. & J, J. (2026). Neck-vein thrombosis during spaceflight.. doi.org. https://doi.org/10.1002/bcp.70300

Epidemiological characteristics of pulmonary thromboembolism in children: a systematic review and meta-analysis.
2026
Female sex and oral contraceptive use are frequently reported clinical characteristics and risk factors in adolescent thromboembolism.
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J, L., X, N., L, Z., X, S., S, D., L, C., H, L., & L, Z. (2026). Epidemiological characteristics of pulmonary thromboembolism in children: a systematic review and meta-analysis.. doi.org. https://doi.org/10.1136/bmjopen-2025-104471

Venous thromboembolic disease associated with hormonal contraceptives. Venous Thromboembolism Group of the Spanish Society of Internal Medicine and the Catalan Society of Contraception.
2026
Combined hormonal contraceptives are associated with an increased risk of venous thromboembolism due to the induction of a hypercoagulable state.
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A, F. M., J, P. C., O, M. C., N, M. R., M, M. A., & Á, B. M. (2026). Venous thromboembolic disease associated with hormonal contraceptives. Venous Thromboembolism Group of the Spanish Society of Internal Medicine and the Catalan Society of Contraception.. doi.org. https://doi.org/10.1016/j.rceng.2026.502579

What does the evidence say?

The claim is a specific, empirical medical statement that is strongly supported by multiple retrieved reviews and studies showing that oral contraceptives increase the risk of deep venous thrombosis and venous thromboembolism. No papers contradict this relationship.

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