Beef is not bad for your system in small amounts. You will also not want to eat beef that is not properly cooked.
Maybe not. It depends what made the beef "bad".
Not necessarily, browning of beef while in the freezer or fridge just means that it is not as fresh as it could be. If it has a green tinge to it you know it is now bad.
If beef taste like fish then throw it out.
Yes, it is. You should not eat bad beef because it causes potentially fatal food-borne illness.
You should use beef stock two weeks after opening.
how many years does it take to digest beef to break down in system
look at the label
The exact amount of time varies on the environment it's left in, though the first signs of bad beef is an odd discoloration and a rancid smell.
Paul Mcartney
It will have a greenish tint to it. And it will be a little slimy and have a bad smell
Oprah Winfrey
Although not a perfect test, your senses are usually the most reliable instruments to tell if your beef has gone bad. Some common traits of bad beef are dull, slimy flesh and a sour smell. The beef will change from a reddish color to a brown or gray color. To tell if beef in your freezer has been there too long, you will see freezer burn starting to appear on the beef.