Soy products contain isoflavones, which are chemically similar to estrogen. Studies investigating a link to breast cancer show mixed results.
Carcinogenic Potency Database (CPDB), University of California at Berkeley Chemical Carcinogenesis Research Information System (CCRIS), National Library of Medicine International Agency for Research on Cancer (IARC) Monographs National Toxicology Program (NTP): Study Reports and Abstracts collection, 2005 National Toxicology Program: 11th Report on Carcinogens, 2005. National Toxicology Program, Summaries & Associations of Study Results, Chemicals Associated with Site-Specific Tumor Induction in Mammary Gland
Other key references
Everything Added to Food in the US (EAFUS), US Food and Drug Administration Hazardous Substances Data bank (HSDB), National Library of Medicine Household Products Database (HPD), National Library of Medicine Integrated Risk Information System (IRIS) Database for Risk Assessment, US Environmental Protection Agency The Merck Index, ed. 12th, vol., Merck Research Laboratories.Citations listed here were drawn upon to provide information about many chemicals in the database. References focused on individual chemicals can be found in the Cancer Studies tab for those chemicals or by using the search box.
Non-confidential Production Volume Information Submitted by Companies for Chemicals Under the 1986-2002 Inventory Update Rule, US Environmental Protection Agency PAN Pesticides Database, Pesticide Action Network PubChem, National Library of Medicine Scorecard, Environmental Defense Source Ranking Database (SRD), US Environmental Protection Agency TOXNET, National Library of Medicine National Occupational Exposure Survey (NOES) 1981-1983, National Institute for Occupational Safety and Health NIOSH Pocket Guide to Chemical Hazards, National Institute for Occupational Safety and Health Specific Medical Tests Published in the Literature for OSHA-Regulated Substances, National Institutes for Occupational Safety and Health