Passive smoking may cause mutations in sperm
Studies on mice by the International Agency for Research on Cancer suggest that males exposed to passive smoke can cause mutations in the DNA of their sperm and such genetic deformities could then be passed onto their children. John Holden reports.
Smokers do not have it easy. Between price hikes, advertisement bans and unrelenting scientific research into the harmful effects of tobacco, it is hard not to feel some sympathy for those addicted to one of the difficult habits to kick known to man.