Some types of plastics can leach chemicals into foods and beverages. These chemicals include suspected carcinogens or endocrine disruptions. The endocrine system is a system of glands in all of us, each of which secretes a type of hormone directly into the bloodstream to regulate the body. Hormone disruptors have the ability to mimic, block or otherwise interfere with the signals of naturally-occurring hormones throughout the body. Some research is showing links to some alarming trends, including reduced sperm counts and fertility, and increases in breast, testicular and prostate cancers.
-Endocrine disrupting chemicals may be present in: children’s toys, dental sealants, food cans lined with plastic film or even shower curtains.
-A chemical added to PVC can leach from IV bags and tubing into blood or medication being administered to a patient.
While some plastics appear to be free of these chemicals, there is currently no way for the consumer to be absolutely sure of the safety of any plastic. Be aware of the plastic recycling codes #3,6,7 (view Mount Sinai pocket guide) or asking your health care provider about types of plastic being used for your treatment can help you steer clear of chemicals which may present a health risk.
Common Plastic Names to AVOID:
- PVC or Vinyl (Poly Vinyl Chloride) #3 - plasticizers (Phthalates and DEHA) are added to many PVC products. PVC is commonly used in plastic wraps and in food containers. Avoid use.
- Styrofoam or PS(Polystyrene) #6 - styrene and P-nonylphenolare both suspected endocrine disruptors. Styrene is also a suspected carcinogen. Commonly found in plastic food contianers. Styrene leaches into fatty foods and alcoholic beverages. Avoid use.
- Polycarbonate (PC) #7 - most clear plastic baby bottles and 5 gallon water bottles are made of Polycarbonate and BPA(BisphenlyA), known Endocrine Disruptor. Avoid use.
WARNING: A “microwaveable” label on a plastic container only means it will not break or melt in the microwave. It does not address the fact that certain plasticizing chemicals (noted above) can leach into food when heated. Foods with a high fat content present the greatest risk as most chemicals that leach from plastic are lipophilic (fat loving) and heat speeds up the leaching process into the fat. To avoid this risk, never use plastic containers to heat food. For heating or storage, use glass or lead-free ceramic containers. Unwrap foods purchased in plastic wraps and store as above or in wax paper or cellulose bags.
(Jan,1 2009 “The Green Guide” #77, March 2000)