According to a report in the August 20th issue of the International Journal of Cancer, females who smoke multiple cigarettes a day for several decades may place themselves at an increased risk of developing breast cancer. As part of a comprehensive study, researchers from Albert Einstein College of Medicine in New York analyzed data from nearly 90,000 women over a 10-year period, finding 2,552 instances of breast cancer. Scientists involved in the research concluded that women who smoked 20 or more cigarettes a day for at least 40 years were nearly twice as likely to develop breast cancer than females who did not smoke.