Synthetic chemicals called phthalates, found in hundreds of consumer products such as food storage containers, shampoo, makeup, perfume and children's toys, may contribute to some 91,000 to 107,000 premature deaths a year among people ages 55 to 64 in the United States, a new study found. People with the highest levels of phthalates had a greater risk of death from any cause, especially cardiovascular mortality, according to the study published Tuesday in the peer-reviewed journal Environmental Pollution. Phthalates are known to interfere with the body's mechanism for hormone production, known as the endocrine system, and they are linked with developmental, reproductive, brain, immune, and other problems," according to the National Institute of Environmental Health Sciences. Even small hormonal disruptions can cause "significant developmental and biological effects," the NIEHS states. Prior research has connected phthalates with reproductive problems, such as genital malformations and undescended testes in baby boys and lower sperm counts and testosterone levels in adult males. Often called "everywhere chemicals" because they are so common, phthalates are added to consumer products such as PVC plumbing, vinyl flooring, rain- and stain-resistant products, medical tubing, garden hoses, and some children's toys. Other common exposures come from the use of phthalates in food packaging, detergents, clothing, furniture and automotive plastics.