Plastic wrappers, cans of food and storage deposit at least two potentially harmful chemicals in our food tubs, a new study confirms. By cutting, container, people can dramatically reduce their exposures to these toxins.
The chemicals - Bisphenol A, or BPA, and a phthalate DEHP called - are known, hormonal systems in the bodies of animals and humans, what development and reproductive problems, as well as cancer, heart disease and brain to interfere with diseases. And displayed both in a variety of food packaging.
But people in the new study avoiding plastic and ate mostly fresh food for three days, the levels of these chemicals in their bodies of more than 50 percent, and sometimes much more.
"What this says is that food packaging really the main source of exposure to BPA and DEHP," Ruthann said Pack, a toxicologist at the Silent Spring Institute, a research and advocacy group in Newton, Massachusetts "the good news is that we have a evidence"", that people can make daily decisions about their kitchens and their diet if they want to reduce the exposure to these compounds."
These chemicals are in a variety of consumer products. DVDs, glasses and cash register delivery receipts can contain BPA. PVC toys, medical hoses and pipes can contain DEHP. Previous studies have also found materials in food and food packaging, including plastic, plastic containers and the epoxy lining of metal cans wraps.
To strengthen the connection of food packaging to human exposure, packs and colleagues of the diets of 20 Bay area changed families, each with two adults and two children. All households reported that that either they, water bottles, of polycarbonate they ate in restaurants, food in plastic containers microwave drank, ate food canned or frozen dinners or used plastic materials-the exposure to at least some chemicals concern would suggest.
During an eight-day study, researchers urine samples of participants took each night to proof of BPA and four types of phthalates are looking for.
For a few days at the beginning and end of the week are families with their normal diet. But for three days in the study, she ate only food that was prepared for them by a caterer in specific guidelines.
The majority of the food was fresh. Cans were not allowed. Food preparers with plastic utensils or non-stick cookware to avoid. Food and drink were containers at levels are low enough that the content not BPA-free lid touch in glass or stainless steel. Had even coffee in a French press or drip ceramics are made so that no plastic was involved in.
During the three-day intervention, average values of BPA in humans urine dropped 66 percent, which researchers report today in the journal environmental health perspectives. Measured high dropped to 75 percent. Averages of certain breakdown products has fallen fell by more than 50 percent and maximum measured level 95 percent for DEHP.
When saw the researchers of phthalates, which shows in places such as nail polish, fragrances and glue, but not in food packaging, they see no change at all during the students-what is suggesting that food packaging actually the most important source of exposure to BPA and DEHP.
The results are from recent work with higher levels of BPA in canned foods than in fresh versions, Arnold Schecter, public health physician at the University of Texas School of public health in Dallas, said that has pioneered a number of studies on chemicals in our food supply.
Scientists are concerned about the unknown and accumulative health effects of exposure to multiple toxic substances from many sources, added Schecter. Search for due to lower levels of all chemicals by lots is encouraging.
"her studies and us more or less show in the same direction with the conclusion is that we us a little likely to poison less we use eat are not stored in BPA-lined cans or phthalate-containing materials," said Schecter. "It seems to me the good news." "From the perspective of public health if we can reduce our levels of these chemicals is, that a good thing."
How the chemical loads on our body to limit can help food-related decisions, but it is virtually impossible to eliminate claims. Many food-processing procedures, including cow milking, use plastic drums and PVC hose.
This policy comes in, Pack said. Some countries have already banned BPA in cans and DEHP in food packaging. Such legislation may ultimately the only way, these chemicals out of our food and our body to keep.
"Because we can not be our way of the problem to shop really" said she, "I think it is very important efforts to replace these types of chemicals in food packaging with safer alternatives."
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