It's your damn body. Feel free to do what you like. Me, I eat cheaply and live cheaply, and spend my consequently freed money on enjoying being alive. Or on my nearest and dearest.
My main point was that really:
1. You ARE going to die, like it or not
2. Obsessing over plastic in your food chain may keep you alive 3.4 years longer, but it will also make you a collossal creepy bore.
Although iirc you're still young enough that point 2 isn't so much of an issue yet.
PS. Your PM box is full.