肺癌與吸煙的關係
吸煙是引致肺癌的最主要成因:
- 85%的肺癌個案與吸煙有關[1]
- 10個吸煙者中有1人是肺癌患者
- 吸煙者患肺癌的風險是非吸煙者的22倍[2]
- 越年輕開始吸煙,患肺癌的風險越高
- 在家中或工作場所接觸二手煙的非吸煙者患肺癌的風險比一般人高出30%[2]
戒煙的好處
戒煙不但能降低吸煙者患上肺癌的風險,並能即時改善健康。只要堅持戒煙,各種疾病風險都會逐漸下降[3][4][5]:
- 戒煙20分鐘後,⾎壓和⼼率下降⾄正常水平
- 戒煙12⼩時後,在⾎液中的⼀氧化碳⽔平下降至正常
- 戒煙48⼩時後,你的嗅覺和味覺得到改善
- 在戒煙2⾄12週內,循環系統和肺功能得到改善
- 在戒煙1⾄9個⽉內,咳嗽和呼吸急促的情況減少
- 在戒煙1年內,患冠⼼病的機會減少了⼀半
- 在戒煙5年後,從前的重度吸煙者,患上肺癌的風險較吸煙者低39.1%[5]
- 在戒煙5⾄15年內,中風的風險降低至如非吸煙者的水平
- 在戒煙10年後,死於肺癌的風險⼤約是吸煙者的⼀半[3][4][5][6]
- 在戒煙15年中,戒煙者患冠⼼病的風險如非吸煙者的水平
戒煙資訊
如想了解更多吸煙與健康及戒煙資訊,可瀏覽香港吸煙與健康委員會網頁:https://www.smokefree.hk/
參考文獻
- World Health Organization. Lung cancer. 2023. Available at: https://www.who.int/news-room/fact-sheets/detail/lung-cancer. Accessed on 02 February 2026.
- World Health Organization. Don't let tobacco take your breath away: choose health, not tobacco: 31 May, World tobacco day. 2019. Available at: https://iris.who.int/handle/10665/312260. Accessed on 02 February 2026.
- World Health Organization. Tobacco: Health benefits of smoking cessation. 2020. Available at: https://www.who.int/tobacco/quitting/benefits/en. Accessed on 02 February 2026.
- Tobacco and Alcohol Control Office of the Department of Health. Benefits of Quitting. Available at: https://www.livetobaccofree.hk/en/reason-to-quit/beneits-of-quitting.html. Accessed on 02 February 2026.
- Hong Kong Council on Smoking and Health. Smoking Cessation. Available at: https://www.smokefree.hk/page.php?id=84&preview=&lang=en. Accessed on 02 February 2026.
- Tindle HA, Stevenson Duncan M, Greevy RA, et al. Lifetime Smoking History and Risk of Lung Cancer: Results From the Framingham Heart Study. Journal of the National Cancer Institute 2018; 110(11):1201-1207.










