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the claim

Specific components of cigarette smoke are harmful to the bladder

the verdict
SUPPORTED
the evidence backs this
Recorded sources
3 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 specific components of cigarette smoke are harmful to the bladder?

Yes. Specific components of cigarette smoke, such as aromatic amines and polycyclic aromatic hydrocarbons, are harmful to the bladder and strongly linked to urothelial bladder cancer progression and cellular damage.

Verdict: SUPPORTED · 3 sources for, 0 against · Last checked

The analysis

Multiple studies demonstrate that components and extracts of cigarette smoke (including tobacco and e-cigarette smoke, as well as specific constituents like 4-aminobiphenyl) cause DNA damage, hyperplasia, and promote bladder cancer progression. There are no refuting studies in the provided set.

Evidence for · 3
Electronic-cigarette smoke induces lung adenocarcinoma and bladder urothelial hyperplasia in mice
2019
Electronic-cigarette smoke induces DNA damage, cell alterations, and urothelial hyperplasia in the bladder of mice.
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Tang, M., Wu, X., Lee, H., Xia, Y., Deng, F., Moreira, A., Chen, L., Huang, W., & Lepor, H. (2019). Electronic-cigarette smoke induces lung adenocarcinoma and bladder urothelial hyperplasia in mice. doi.org. https://doi.org/10.1073/pnas.1911321116

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More for · 2
Risk Factors Associated with Urothelial Bladder Cancer.
2024
Tobacco smoke contains components like polycyclic aromatic hydrocarbons and aromatic amines (such as 4-aminobiphenyl) that are established risk factors and causes of urothelial bladder cancer.
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S, A. (2024). Risk Factors Associated with Urothelial Bladder Cancer.. doi.org. https://doi.org/10.3390/ijerph21070954

Extracellular Vesicle-Packaged MIR4435-2HG Facilitates Cigarette Smoke-Induced Bladder Cancer Progression through Enolase 1-Dependent Glycolytic Reprogramming.
2025
Cigarette smoke-related carcinogens like 4-aminobiphenyl promote bladder cancer progression through macrophage-derived extracellular vesicles.
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Zheng, R., Xiao, Y., Yang, J., Mao, Z., Tan, Z., Wei, C., Gao, F., Wu, J., Shen, Y., Huang, Z., Wang, M., Du, M., & Zhang, Z. (2025). Extracellular Vesicle-Packaged MIR4435-2HG Facilitates Cigarette Smoke-Induced Bladder Cancer Progression through Enolase 1-Dependent Glycolytic Reprogramming.. doi.org. https://doi.org/10.1021/acsnano.4c15108

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What does the evidence say?

Multiple studies demonstrate that components and extracts of cigarette smoke (including tobacco and e-cigarette smoke, as well as specific constituents like 4-aminobiphenyl) cause DNA damage, hyperplasia, and promote bladder cancer progression. There are no refuting studies in the provided set.

Receipt History
first checked04 Aug 2026
judged → SUPPORTED · 9004 Aug 2026
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