� Special topics (continued)
� Other smoking topics
SexRx: nicotine and your sex life
Nicotine is a vasoconstrictor, which means that it causes narrowing of blood vessels and decreases blood flow. Alterations in blood flow can lead to impotence. Read more here.

Dangers of secondhand smoke
Secondhand tobacco smoke contains over 4,700 chemical compounds. More than 200 of these are known poisons. Read more here.

Cigars: coolish or foolish?
Cigar smoking is no longer just a refuge for older men; it's been revamped to become one of the latest trends amongst celebrities, women, and teens. Does it pose less risk than cigarettes?
� Related conditions
� Resources
American Cancer Society
http://www.cancer.org
American Lung Association
http://www.lungusa.org
National Cancer Institute
http://www.cancer.gov