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Girls are developing faster and entering puberty earlier than a generation ago. Contrary to popular wisdom, early puberty is not merely a reflection of physical changes-it's deeply psychological with effects that can put a girl at risk for behavioral problems as well as long term health challenges, such as obesity, depression, eating disorders, and even breast cancer.
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MEDIA ALERT: The California Health Report publishes the latest article on the CYGNET Study and early onset puberty in young girls
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In 2003, Zero Breast Cancer collaborated with scientists from Kaiser Division of Research and UCSF to establish a Bay Area Breast Cancer and the Environment Research Program which was funded by the National Institute of Health Sciences and the National Cancer Institute.

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11th Annual San Francisco Avon Walk Raises More Than $4.2 Million
San Francisco, Calif., September 29, 2013 - The 11th annual Avon Walk for Breast Cancer season continued with the Avon Walk San Francisco this weekend, raising more than $4.2 million to advance access to care and funding breast cancer prevention and treatment research.

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Shoe Stories of Sausalito, a brand new luxury shoe and bag boutique in downtown Sausalito, is generously donating 10% of their proceeds through the end of October to the Roni Peskin Mentzer Memorial Fund of Zero Breast Cancer.

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Zero Breast Cancer (ZBC) mourns the death of Roni Peskin Mentzer, Emeritus member of our Board of Directors, who passed away on July 3, 2013, following a long and courageous battle with breast cancer. A founding member of ZBC, known then as Marin Breast Cancer Watch (MBCW), Roni’s personal experience fueled her determination to find out why women living in Marin County had such a high incidence of the disease.
- Pacific Heights Cleaners Climbs Mt. Shasta for Zero Breast Cancer
- Zero Breast Cancer Comments on Angelina Jolie's Preventative Double Mastectomy
- Troubling Problem
- Doctors to Notify of Risk of Cancer
- Teri Hollowell: A Zest for Life, a Zeal for Giving
- ZBC Is a Proud Member of the California Breast Cancer Mapping Project