Smoking worsens breast cancer in high-risk women
May 24, 2011
Smoking for more than 35 years increases the risks of breast cancer by 60 percent, according to a new study sponsored by the U.S. National Surgical Adjuvant Breast and Bowel Project (NSABP) Breast Cancer Prevention Trial.
The chances of having colon cancer also increased for women who smoked between 15 and 35 years. For women in this group, the risk of breast cancer was measured to be 34 percent higher than non-smokers.
"Our results showed an even greater increase in risk than has been shown in previous studies, suggesting that for women who are at risk of breast cancer because of family history or other factors, smoking cigarettes is even more risky than for other women," said Stephanie Land, a research associate professor at the University of Pittsburgh's Graduate School of Public Health.
More than 200,000 women were newly diagnosed with breast cancer in the U.S. in 2010, according to the American Cancer Society. Women over the age of 40 should receive yearly mammograms, and younger women should have regular self exams as well as clinical breast exams.