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Exposure to phthalates, a group of plasticizing and solvent chemicals found in many household products, was linked to a lower probability of getting pregnant, but not to pregnancy loss, according to research by a University of Massachusetts Amherst environmental and reproductive epidemiologist.

The study, published this week in the journal Environmental Health Perspectives, also noted an association between preconception exposure to phthalates and changes in women's reproductive hormones, as well as increased inflammation and oxidative stress.

"Phthalates are ubiquitous endocrine disruptors and we're exposed to them every day," says lead author Carrie Nobles, assistant professor of environmental health sciences in the School of Public Health and Health Sciences at UMass Amherst.

Phthalates are found in such common products as shampoo, makeup, vinyl flooring, toys and medical devices. People are exposed primarily by ingesting food and liquid that has come in contact with products containing the chemicals, according to a Centers for Disease Control and Prevention fact sheet.