This archived forum used to be called 'Peatarian' (in reference to Ray Peat).

Tetra Pak Polyethylene Metabolism

Tetra Pak cartons contain polyethylene, which is in contact with the product. What's the metabolism of that polyethylene (it apparently is low density polyethylene)?

A study found that water from Tetra Pak cartons has an estrogenic effect. Link

asked Feb 15, 2015 by john
edited Feb 15, 2015 by john

Many scientists believe that it is not appropriate to bet our health
and that of future generations on an assumption that known cellular
effects of chemicals having EA [estrogenic activity] released from
most plastics will have no severe adverse health effects (Gray 2008;
Talsness et al. 2009; Thompson et al. 2009). Because we can identify
existing, relatively inexpensive monomers and additives that do not
exhibit EA, even when stressed, we believe that plastics having
comparable physical properties but that do not release chemicals
having detectable EA could be produced at minimal additional cost.

Source: Most Plastic Products Release Estrogenic Chemicals: A Potential Health Problem That Can Be Solved

1 Answer

The Scary New Evidence on BPA-Free Plastics
And the Big Tobacco-style campaign to bury it

"Their position was: Until consumers are demanding nonestrogenic
products, there's no reason to be an early adopter," Usey explains.
"They want to delay as long as they can, because they know any
transition will cost them." In some cases, manufacturers paid for
testing, then never collected the findings. "They didn't want to know
the results because there's liability in knowing"

Customer: DEMAND that the packaging of your product is EA-free (not just BPA-free).

answered Feb 15, 2015 by john