Here are just a few of the harmful health effects of smoking pipes and cigars: Cancer. Even if you don't inhale, you can get a number of different cancers from smoking pipes and cigars. People who smoke cigars regularly are four to 10 times more likely than nonsmokers to die from cancers of the mouth, larynx, and esophagus.
Cystic fibrosis is a recessive disorder. In a recessive disorder, both parents must carry a copy of the abnormal gene for the problem to occur in their child. A person who has one copy of an abnormal gene for a recessive disorder is a carrier for that disorder, even though he or she may show no signs of it.
If both parents are carriers of the CF gene (i.e., they each have one copy of the defective gene), their child will have a 25% chance of inheriting both defective copies and having cystic fibrosis, a 50% chance of inheriting one defective copy and being a carrier, and a 25% chance of not having CF or carrying the gene.