CDC: Rocket Fuel Chemical Found in Baby Formula
By Mike Stobbe
The study by scientists at the U.S. Centers for Disease Control and Prevention looked for the chemical, perchlorate, in different brands of powdered baby formula. It was published last month, but the Environmental Working Group — a Washington, D.C.-based advocacy organization — issued a press release Thursday drawing attention to it.
The chemical has turned up in several cities' drinking water supplies. It can occur naturally, but most perchlorate contamination has been tied to defense and aerospace sites.
No tests have ever shown the chemical caused health problems, but scientists have said significant amounts of perchlorate can affect thyroid function. The thyroid helps set the body's metabolism. Thyroid problems can impact fetal and infant brain development.
However, the extent of the risk is hard to assess. The government requires that formula contain iodine, which counteracts perchlorate's effects. The size of the infant and how much formula they consume are other factors that can influence risk.
The U.S. Food and Drug Administration, aware of the debate over perchlorate in food and water, has not recommended that people alter their diet or eating habits because of the chemical.
The study itself sheds little light on how dangerous the perchlorate in baby formula is. "This wasn't a study of health effects," said Dr. Joshua Schier, one of the authors.
The largest amounts of the chemical were in formulas derived from cow's milk, the study said.
The researchers would not disclose the brands of formula they studied. Only a few samples were studied, so it's hard to know if the perchlorate levels would be found in all containers of those brands, a CDC spokesman said.
"This study provides no data on potential health effects of perchlorate. Health authorities continue to emphasize that infant formula is safe," said Haley Curtis Stevens of the International Formula Council, which represent formula manufacturers.
Earlier this year, the U.S. Environmental Protection Agency said it was considering setting new limits on the amount of perchlorate that would be acceptable in drinking water. A few states have already set their own limits.
The agency issued a statement Friday saying perchlorate exposure is a serious issue and "a top priority" for EPA Administrator Lisa Jackson. EPA officials expect to announce a decision soon about future steps in dealing with the chemical.
The EPA has
checked nearly 4,000 public water supplies serving 10,000 people or more.
About 160 of the water systems had detectable levels of perchlorate, and 31
had levels high enough to exceed a new safety level the EPA is considering.
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