It's Food Fest here on Newstalk, and as part of our celebrations for all things food, neuroscientist and author of '100 Days To A Younger Brain', Sabina Brennan gave Ivan all the facts when it comes to how food can affect the brain.

Depending on the fuel you put into your body, your brain's performance can markedly change, even though Ivan insisted he was a bit of an outlier in that respect.