It's been touted as the secret behind some of the world's top celebrity bodies, from supermodel Miranda Kerr to athlete Sonny Bill Williams.
And now we, too, can achieve their enviable physiques.
All you have to do is take a leaf out of the caveman's cookbook.
A Current Affair explains.
If you would like to know more about the paleo diet you can visit Dr Loren Cordain’s website www.thepaleodiet.com
Dr Loren Cordain is speaking at the BioCeuticals Research Symposium
Paleoish Princesses blog paleoishprincesses.com
And follow them on Instagram @paleoishprincesses
To find a Paleo Cafe near you, go to http://paleo-cafe.com.au/