[budgi4]

Heating plastics can release not just BPA but also phthalates, dioxins, and other harmful compounds which are linked to lots of nasty heath issues like hormone disruption, cancer and reproductive problems.

Polypropylene is generally considered one of the safer plastics with it's high heat tolerance meaning doesn't leach harmful chemicals. While pure polypropylene may be considered safe, additives used in the manufacturing such as colourants or fillers could have their own health risks.

Personally avoid mixing food or drinks with any heated plastics, including my coffee. I use French press for my coffee but if Aeropress is your thing and want to avoid plastic I've heard good things about the Cafelat Robot which is made almost entirely out of aluminium and stainless steel.