SAFER: If it is a #2 HDPE (high density polyethylene), or a #4 LDPE (low density polyethylene), or a #5 PP (polypropylene)- safer plastic for use as food and drink containers AVOID: #6 PS (polystyrene) - can leach styrene, a brain and nervous system toxicant, associated with advesre effects on red blood cells, liver, kidneys and stomach in animal studies.
AVOID: Other plastics not found in numbers listed above which includes polycarbonate plascti made with bisphenol A (BPA). BPA can leach from polycarbonate plastic, especially when heated. It is a hormone disrupter, linked to the early onset of puberty, obesity, recurrent miscarriages, decreased sperm productions, and is associated with breast and prostate cancer.
Holy Camoly, pretty unnervinfg stuff. I for the most part am going to try and aviod plastic of pretty much all kinds, unless it is noted clearly to be the safer plastic as listed above. The Kleen Kanteen has plaxtic lids but is of the safe plastic.
I will keep you updated on my purge of plastics and what I plann to use as substitutions. For starters there will be no more milk in plastic jugs but in the cardboard cartons.
For more information visit: http://www.toxicnation.ca/