Lance Armstrong, Anna Hansen Expecting Naturally Conceived Baby

Armstrong was diagnosed in 1996 with testicular cancer that had spread to his brain, lungs and abdomen. He underwent treatment for the disease and was able to return to cycling, eventually winning seven consecutive Tour de France races.

The harsh chemotherapy left him unable to have children, although he and then-wife Kristin Richards had three children using sperm the cyclist had donated before the treatment. Armstrong and Hansen, however, are expecting without the use of any artificial fertilization process.

"This is a hopeful thing for testicular cancer survivors," CNN medical correspondent Dr. Sanjay Gupta said. "It means his body healed from the chemotherapy and surgery."