It's possible, say many researchers, that early exposure to chemicals like BPA is making more of us grow up to be chubby, infertile, or more prone to illness as kids and adults. We also tossed into our shopping cart packages of best-selling frozen dinners for both children and adults and plastic liners designed to be used in a slow cooker. In the meantime, the National Toxicology Program has stepped in, conducting its own revised review of BPA. Wax paper, plastic wrap, paper (not foam) plates and white, unprinted paper towels are suitable options, as well. For one thing, we know we have these chemicals in our bodies, and they're getting there somehow. Just one to three servings of those foods with those concentrations could expose a woman or a child to BPA at levels that cause serious adverse effects in animal tests, the group concluded. Many women used DES until the early 1970s, when researchers discovered it was causing an unusual cancer of the reproductive tract in young women who'd been exposed to the hormone in the womb. But what scientists like Hunt and Swan and others have come to realize is that chemicals like BPA and phthalates don't play by the rules. But a review of additional recent research yielded other unsettling questions, particularly about hormonally related ills. In pretesting, low levels of BPA had turned up in the two containers — Rubbermaid Easy Find Lids and Rubbermaid Premier. Depending on who you ask there are three answers to the question whether you should put hot food into the refrigerator: “Yes”, “no”, and “yes, but…” Different Places, Different Approaches To Storing Food. Opinions in the US and Europe vary widely when it comes to putting hot food in the refrigerator. In short, we gathered together a potpourri of the kind of plastic items most of us use for heating foods. Then place the pot of food or smaller containers in the ice water. But we need more definitive answers than the authorities have been giving us. Plastic containers should never be washed with hot water or in a dishwasher or used to cook or re-heat food in a microwave oven. However, the fact that so many of us have the compound in our bodies means that we're exposed to it daily, says Dr. Jacob. The Fix: When heating food in a microwave, only use microwave-safe cookware. Since learning more about the health effects of plastics, including how much we don't know, I've changed some habits. If you must put hot food in the refrigerator, try not to put hot food in deep containers. "The science is just not definitive.". Heated plastic leaches chemicals 55 times faster, so whether you’re reheating a plastic plate in the microwave, putting hot food in a storage container, or using a plate that’s been run through a hot dishwasher, you’re upping your chance of chemical leaching. My list just got a little longer. Nor does anyone know for sure whether BPA accumulates in humans over time, though most scientists believe adults process it quickly — in as little as a day. If you can't find compostable, or foil containers, the next best options are plastic containers that are recyclable and marked with the number 2 or the number 5. Next, the lab tested these four items with "food simulants" — chemicals designed to stand in for real food in a lab. Its draft report, released last April, was stronger than its earlier version, adding "some concern" for BPA exposure in fetuses, infants, and children, based on effects in the prostate and mammary glands, and on an earlier age for puberty in females. Nor should hot food be stored in a plastic container without first allowing time for the hot food to cool down. Number 7 may contain BPA and 3 may contain phthalates. 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