The time a person smokes (as well as rate of smoking) increases the person's chance of developing lung cancer. If a person stops smoking, this chance steadily decreases as damage to the lungs is repaired and contaminant particles are gradually removed. In addition, there is evidence that lung cancer in never-smokers has a better prognosis than in smokers, and that patients who smoke at the time of diagnosis have shorter survival times than those who have quit.
The time a person smokes (as well as rate of smoking) increases
所有跟帖:
•
Passive smoking—the inhalation of smoke from another's smoking—i
-JoshuaChow-
♂
(462 bytes)
()
10/26/2010 postreply
08:40:10
•
10–15% of lung cancer patients have never smoked.
-JoshuaChow-
♂
(330 bytes)
()
10/26/2010 postreply
08:42:37