It was long believed that you could acquire “better living through chemistry.” But that may really not be the case. In a landmark alliance, known as Project TENDR, leaders of various disciplines have come together in a consensus statement to say that many of the chemicals found in everyday products can result in neurodevelopmental disorders, including autism and attention-deficit disorders.

“Ten years ago, this consensus wouldn’t have been possible, but the research is abundantly clear,” said Irva Hertz-Picciotto, an environmental epidemiologist at the University of California, Davis and co-chairwoman of Project TENDR.

“At some point, we say we know enough to take preventative action,” said Frederica Perera, a professor of environmental health sciences at Columbia University. Perera is also a signatory on the statement.

Last year, the International Federation of Gynecology and Obstetrics (PDF) stated that “Widespread exposure to toxic environmental chemicals threatens healthy human reproduction.” Other medical groups such as the Endocrine Society (PDF), the world’s oldest and largest organization devoted to researching hormones, have expressed similar concerns.

But this is the first time that leading scientists, doctors and policy advocates across various disciplines have come together to say that the science on toxic chemicals is clear: They can harm brain development.