http://www.mayoclinic.org/diseases-conditions/liver-failure/...
The tricky thing with acetaminophen is that it is included in products without adequate warning. If I'm sick, I have a headache and take 2 tylenol, plus cold medicine, plus whatever, and BAM I've killed my liver because those 3 things all had acetaminophen in it. The tipping point between being 100% healthy, and 100% needing a liver transplant is really narrow.
http://www.dailymail.co.uk/news/article-2064964/Warning-hidd...
http://www.esquire.com/lifestyle/health/a235/esq1103-nov-bod...
Nevermind what acetaminophen does to fetuses, this drug needs to be treated with a lot more caution. I have dialed my intake waaaaaaay back. I'm sure my liver is happier with me.
If you take tylenol, make sure you take no more than the suggested dose. Make sure you aren't getting duplicate dosing bundled with other medications. Make sure you don't routinely take it longer than the bottle dose instructions indicate.