The rule I use is, If it doesn't come out of the ground looking the way it looks when you eat it, be careful. There's no such thing as a PowerBar tree.
Mehmet OzOur ancestors had to eat whenever food was around. And we're actually still hardwired the same way. The big difference is we don't have to hunt for our food. For us, "hunting" comes down to sliding the milk carton out of the way.
Mehmet Oz