What a refreshing and enlightening interview this was!
Dr Emily Leeming is a true gut expert (not one of the many people online who purport to be one) who has studied our microbiomes more than anyone I've ever encountered and is on a mission to help us feel better by looking after our "2nd brains" in a simple yet really effective way.
During the episode we chat about the microbes that live on and in our body and how without them we would find it hard to survive. Emily myth busts in a big way, explaining why probiotics are not generally the answer and why rather than populating our guts with supplements, we need to look after and diversify them with diet, social interaction and other simple but truly effective tricks for health.
I ask Emily so many questions (I couldn't get them out quickly enough) and just know that this episode is going to help so many people.
I also have to point you to her AMAZING book Genius Gut which I devoured in a day. 
Please listen to this episode if you have time. It will help you without overwhelming or encouraging restrictive or comlex diets. Emily is indeed a genius!