Melanoma, the most serious form of skin cancer, primarily arises from damage to skin cells' DNA caused by ultraviolet (UV) radiation.

Main Causes

UV exposure from sunlight or tanning beds damages genes controlling cell growth, leading to uncontrolled multiplication into cancer. In the UK, about 85% of cases link directly to excessive UV. Inherited mutations like CDKN2A also play a role in familial cases, though rarer.

Key Risk Factors

  • Fair skin and freckles : Lighter skin produces less protective melanin; freckling raises odds further.
  • Sunburn history : Especially childhood burns, as 86% of melanomas tie to UV overexposure.
  • Many moles or atypical moles : More moles mean higher risk; dysplastic nevi are precancerous.
  • Weakened immune system : Suppresses body's cancer-fighting ability.
  • Family history : Gene changes from parents elevate susceptibility.

How UV Triggers It

UV rays penetrate skin, mutating DNA in melanocytes (pigment cells). If repair fails, cells grow abnormally—think of it as a genetic typo snowballing into tumors. Sunlamps mimic this damage indoors.

Prevention Insights

Slather sunscreen (SPF 30+), seek shade 10am-4pm, skip tanning beds. Early detection via ABCDE checks (Asymmetry, Border irregularity, Color variation, Diameter >6mm, Evolving) saves lives.

Factor| Risk Increase| Source [cite]
---|---|---
UV Exposure| Major (85-86%)| 35
Fair Skin| 10-20x higher| 3
Family History| 2-3x| 7
Many Moles| Doubles risk| 1

No major 2026 breakthroughs reported yet, but UV avoidance remains cornerstone amid rising cases from climate trends.

TL;DR : UV light is culprit #1, frying skin DNA; fair skin and genetics amplify risks—protect early.

Information gathered from public forums or data available on the internet and portrayed here.