What is the best evidence out there for what behaviors, products etc are, at a personal level, more dangerous? For example, I have a Breville Precision coffeem

What is the best evidence out there for what behaviors, products etc are, at a personal level, more dangerous? For example, I have a Breville Precision coffeemaker. How much plastic is getting leached into my daily cup of coffee? Should I go back to manual pourovers? What is the real hazard I'm risking? How does this compare to other behaviors I may have? Are there other behaviors that I can moderate for high bang/buck ratio?