THE HYPOTHESIS Human papillomavirus may increase the chances of heart disease by suppressing an important gene. THE INVESTIGATOR Dr. Kenichi Fujise, University of Texas Medical Branch in Galveston, and colleagues. A new study suggests that a common sexually transmitted virus already linked to cancer may also cause cardiovascular disease. Women infected with the human papillomavirus, or HPV, are two to three times as likely as uninfected women to have had a heart attack or stroke, according to a report published on Monday in The Journal of the American College of Cardiology. HPV is known to cause cancer of the cervix,...