Are BPA-free canned food safe to eat?

Not necessarily. While BPA is hazardous because of its hormone-disrupting estrogenic effects, the problem is that cans without BPA use alternatives like BPF, BPS, vinyl and polyester that may be as or more toxic than BPA and it is hard to learn what alternatives are being used! See http://ehp.niehs.nih.gov/1408989/ and https://ireadlabelsforyou.com/bpa-free-cans-safe-or-toxic/ and http://tinyurl.com/lsefng7.