A study suggests that smoking may boost risk of developing breast cancer in white people.
The study published in the April 2010 issue of The Breast Journal showed having a smoking history can be a risk factor for developing breast cancer in whites.
The case-control study showed those who had any smoking history were 20 percent more likely to be diagnosed with breast cancer at the age of 55 or younger compared with those who never smoked.
The study led by Abramowitz, M. C. from University of Miami Miller School of Medicine in Miami Florida involved 6000 patients with Tis-4, N0-3 breast cancers diagnosed between 1970 and 2006. Of participants, 45 percent had a smoking history and the rest never smoked.
The researchers found among white patients, ever-smokers were at 20 percent higher risk of being diagnosed at 5 or younger with breast cancer than never-smokers. The association was not significant among black patients.
Additionally, smoking was not associated with T stage, N stage, ER/PR status, or Her-2/neu status even though smokers were less likely to receive breast-conserving treatment, suggesting that smoking could lead to more serious breast cancers.
White smokers also tended to be diagnosed with breast cancer at a younger age and were less likely to receive a breast cancer-conserving treatment. But the association was not evident among black patients.
Many lifestyle factors may increase risk of cancers including breast cancers. These risk factors include red meat, vitamin d deficiency, higher intake of calories, processed meats, certain meat cooking methods, milk, some dairy products, saturated fat and sucrose.
Breast cancer is diagnosed in more than 175,000 men and women and kill about 50,000 each year in the U.S., according to American Cancer Society. The disease will be diagnosed in one in seven women sooner or later in their lifetime.
Jimmy Downs
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