Bone broth is really just stock.
People have been making stock for a LONG LONG time. It isn't some new crazy thing. It is actually a pretty old traditional thing.
Stock is made from using the leftover bones (or buying bones) and creating a soup.
Sounds like magic ammiright?
And it isn't magic.
What it is, is nutritious. The benefit of creating stock from bones is that it contains a ton of minerals (and vitamins and amino acids, but lets focus on minerals). You see bones are where a lot of minerals are stored and in todays world many of us are not getting enough minerals into our diets. Bone broth is an excellent way to get in more in a way that is highly accessible. Meaning that because it is a liquid it has an easier time absorbing into our system.
To sum it up the stock contains minerals we lack and in a liquid form they are easier to absorb. Win, win.
I stumbled upon this article the other day: http://www.today.com/food/i-tried-bone-broth-week-heres-what-happened-2D80450660
And though there are some good points raised, the mentality of "I tried it for a week" makes no sense, really isn't the point, and speaks to how our culture looks at things i.e. magic pill or quick fix. Sigh. Again, it just really isn't the point.
Bone broth isn't a magic bullet.
It is a fantastic addition to a diet.
If you're interested in trying your hand here are a few recipes to get you started. Everyone has their own spin so it is nice to scan a few different sources. Personally, I make mine in a crockpot - my crockpot is tiny so I tend to scale down portions.
Enjoy! And good luck!