ATLANTA (CBS Atlanta) – Older women who walk every day may be less likely to develop breast cancer.

A study from the American Cancer Society found that moderate exercise, including walking, can lower a woman’s risk of breast cancer in the years after menopause.

Researchers at the American Cancer Society looked at the medical records of nearly 75,000 women between the years 1992 and 2009.

About 5,000 of them were diagnosed with breast cancer.

The researchers observed that the most active women reduced their risk of breast cancer by 25 percent over the women who were the least active.

Among the active women, 47 percent said their only physical activity was walking for 3 to 7 hours a week.

The researchers found they reduced their chance of breast cancer by 14 percent.

Scientists concluded that walking an hour a day was beneficial.

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