Helping communities reduce their exposure to harmful chemicals.

Windows of Susceptibility

The goal of the ELLA study is to learn more about how exposure to environmental chemicals during adolescence, a period of rapid growth and change, affects the developing body and how these changes might increase breast cancer risk later in life. Studies suggest that the origins of breast cancer can occur early, for instance in the womb and during puberty.

Chemicals & Breast Cancer

Despite advances in medical research, the incidence of breast cancer among women has not decreased in recent years. In fact, over the past 30 years, global incidence and mortality have increased at annual rates of 3.1 and 1.8 percent, respectively. Breast cancer remains the most common cancer in women worldwide. In the United States, about 1 in 8 women will


Every day we come into contact with hundreds of chemicals, only a fraction of which have been thoroughly tested for safety. These chemicals enter our homes on the soles of our shoes, in the personal care and household products we use, and in the furnishings we buy. Some of these chemicals have been associated with cancer and other health effects.

The ELLA project is a collaboration between the following institutions: