How does smoking cause lung cancer?


K

Konzogwe

JF-Expert Member
Joined
Feb 24, 2008
Messages
441
Likes
29
Points
35
K

Konzogwe

JF-Expert Member
Joined Feb 24, 2008
441 29 35
Normally your lungs' air passages are lined with millions of tiny hairs called cilia. The cilia act like little brooms protecting the air tubes by sweeping dusts,tar,and other foreign materials gradually upward,like escalators,until they can be spit out.
Every time a blast of tobacco smoke hits these cilia,however,they slow down,and soon stop moving. As a result,the trapped tars from the tobacco smoke begin boring into the cells lining the air tubes. Over time,this constant irritation turns some of the cells cancerous.
This transformation takes many years. But once it begins,the cancer steadly eats its way deeper into the lung. By the time it is discovered,it's usually too late.
 

Forum statistics

Threads 1,239,135
Members 476,412
Posts 29,343,766