Kanser Kulit

Tahukah anda bahawasanya pendedahan terlampau lama kepada cahaya matahari boleh meningkatkan risiko mendapat kanser kulit. Ini ditambah pula sekiranya langit tiada langsung berawan atau lapisan ozon yg menipis di langit anda maka lebih banyaklah pancaran radiasi dari matahari akan hinggap ke badan anda.

Ada 3 jenis radiasi asas ultraviolet iaitu

• UVA (long-wave UV)
• UVB (sunburn UV)
• UVC (short-wave UV)

Ultraviolet Radiation Type	General Features
Ultraviolet A radiation UVA, long-wave UV)	-not filtered out in the atmosphere -passes through glass  -produces some tanning  -once considered harmless but now believed harmful over the long term  -levels remain relatively constant throughout the day
Ultraviolet B radiation  (UVB, sunburn radiation)	-some filtered out in the atmosphere by the ozone layer  -does not pass through glass  -causes sunburn, tanning, wrinkling, aging of the skin and skin cancer  -highest intensity at noontime
Ultraviolet C radiation  (UVC, short-wave UV)	-filtered out in the atmosphere by the ozone layer before reaching earth  -major artificial sources are germicidal lamps (to kill bacteria)  -burns the skin and causes skin cancer

Untuk keterangan lanjut sila  klik skin_cancer