Bernard O'Shea: I'm so glad I tried these super seeds, but make sure you get portions right

Chia seeds are the real deal, packed with nutrients and backed up by science. Just ensure you eat them correctly, or you could get "backed up" in an entirely different way.

Bernard O'Shea: can attest to the filling properties of chia seeds. Photograph Moya Nolan

Every month there seems like there's another new superfood. You know the drill - a fresh, trendy food that claims to be the secret to longer hair, higher libidos, youthful skin and eternal life. 

Goji berries, quinoa, and acai berries - they've all had their moment in the spotlight. But one of them has stood the test of time.