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You and your infant may be eligible to participate in this study if you:

Are 18 years of age or older

Have an infant between 0 and 9 months old

Live within 25 miles of Amherst, MA

Have no prior history of invasive breast cancer, mastectomy, breast radiation, or any other cancer except non-melanoma skin cancer

Have a BMI greater than 18.5

Have no health conditions that prevent you from engaging in moderate intensity physical activity