A new study has revealed that young women, who have been smoking a pack of cigarettes a day for a decade, are at higher risk of most common type of breast cancer.

According to the researchers, young women who are current or recent smokers and had been smoking a pack a day for at least 10 years, had a 60 percent increased risk of estrogen receptor positive breast cancer.

However, it was found that smoking had no link to a woman’s risk of triple-negative breast cancer.Christopher Li of the Fred Hutchinson Cancer Research Center, Seattle, and his colleagues conducted a population-based study consisting of 778 patients with estrogen receptor positive breast cancer, 182 patients with triple-negative breast cancer and 938 cancer-free controls.

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