Why pollution is relevant 

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• Biological plausibility: aside from microplastics, PAHs, PM2.5, PFAS, and certain heavy metals cause DNA damage, oxidative stress, inflammation, immune impairment, and endocrine disruption, which are mechanisms relevant to cutaneous carcinogenesis and potentially to virus‑driven MCC (MCPyV‑positive) or UV‑synergized MCC.

• Exposure pathways: Litter (cigarette stubs, tar‑contaminated debris), contaminated sand/soil, and resuspended dust lead to repeated local dermal exposures and surface contacts, increasing the cumulative skin dose.

• Rising incidence & survivorship: MCC incidence has increased in recent decades; effective immunotherapies mean more people live longer after diagnosis, increasing the public health importance of identifying modifiable environmental contributors.

  • Caveat: 
Direct, well‑powered epidemiologic evidence tying environmental pollution to MCC is limited; the link is biologically plausible but not yet proven.

 

 

Practical reasons to include cleanups

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• Reduce dermal contact with pollutant‑laden litter (especially cigarette stubs and tar deposits).

• Lower community pollutant burden that can drive chronic skin inflammation and immune effects.

• Enable low‑cost data collection and community science (photographic litter audits, GPS  hotspot mapping, and optional surface wipes) that can support future exposure and research efforts.

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Simple safety & science tips for volunteers

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• Wear nitrile or work gloves and avoid direct hand-to-mouth contact.

• Wash or launder clothing and skin promptly after events.

• Optionally document litter types and locations (photos + GPS), or collect surface wipe samples only under a defined protocol and with informed consent.

 

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