司機不經意的小動作竟有致癌風險

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It is the quintessential sign of summer. But now scientists are warning that hanging your arm out of a car window greatly increases your chance of getting cancer on the left side of your body. Researchers at the University of Washington in Seattle used a federal database to analyse skin cancer data and found that two particularly nasty types of cancer are far more likely to occur on the left side.

也許這是炎炎夏日中很常見的景象------開車的司機在行駛過程中將胳膊隨意“搭”在窗外，這種開車方式本來應該只受到交警叔叔的“紅牌罰下”，然而近日的一項研究報告將這種行爲更視爲對身體極爲危險的舉動之一，因爲這樣會增加身體左部分的“癌症風險”。據悉，美國西雅圖華盛頓大學的研究員說：“我們根據聯邦數據庫的數據分析了這種情況，這種不健康的開車方式會增加皮膚癌的風險。”

The scientists discovered that for melanomas that only occurred on one side of the body, 52 per cent of those cases were on the left side. When they examined the data for merkel cell carcinomas - another type of skin cancer - they found 53 percent were on the left side. Compounding the results, researchers also found that on the upper arms, 55 percent of merkel cell cases developed on the left side.

科學家研究發現黑素瘤(源於皮膚，粘膜，眼和中樞神經系統色素沉着區域的黑素細胞的惡性腫瘤)一般經常出現在身體的一側，據悉，有52%的病例是出現在患者的左側。而每年美國有25000個惡性黑素瘤新增病例，死亡約6000人。發病率在急速上升。日光照射是危險因素，同樣危險因素還包括家族史，發生惡性斑痣，較大的先天性黑素細胞痣和發育不良性痣綜合徵。此外，另外一種皮膚癌---默克爾細胞癌也有存在與身體左側的傾向，概率更高爲55%。科學家警告，這種皮膚癌更容易在人體的左臂上半部生成。

Writing in the Journal of the American Academy of Dermatology, the researchers said: ' Both melanoma and MCC are significantly more likely to arise on the left than the right, and this effect was most prominent on the arm. 'Driver-side automobile ultraviolet exposure (approximately 5-fold stronger on the left than right arm) is a likely contributing factor.' The results seemingly back up research done in countries where drivers sit on the right.

此研究成果發表在《美國皮膚病學會雜誌》上，研究員說：“兩種皮膚癌在人體左部分產生的機率相比右部分會更大，而且在手臂上產生的影響恐怕是永久的。”這樣說來，司機在夏日高溫的時候將左臂伸出窗外，讓其既緊貼着高溫的車表皮，又同時接受高溫的暴曬，患上皮膚癌的機率大增就不是那麼奇怪了。據悉，這項研究還將繼續在“駕駛座位於車輛右側”的國家範圍內做調查，看看司機把右臂放於窗外患上皮膚癌的機率是不是同樣高呢？