Just read the book Skinny B*tch, it's allll in there.
I won't judge someone for eating meat, because I have done so for my entire life, but after reading this book i won't go back. It teaches you about all of the things that go into your meat, and how just because the fda approves it doesn't mean that it's okay. There are at least 200 (or more) pesticides or SOMETHING (i'm tired) that are allowed in your meat before it isn't allowed to be sold. SICK.
Also, it talks about how cows are supposed to produce 10 gallons of milk a day, but farmers give them hormones so that they produce 100 gallons a day = more money, and we're drinking those hormones. How we do NOT need milk, we're the only species that drinks milk after we're done nursing from our mothers, and we're the only species that drinks milk from another species. & how drinking all of those hormones has caused our teenage girls to go into puberty younger, like 8 or 9 when they never used to.
I don't know, it's a great book. Even if you like meat, that's great, but it's still really interesting and I highly reccomend it =)