On the first episode of Food Investigators Dr Renee Lim investigates one of the biggest dangers to our national health: salt. She finds out where it's hiding in our food.

On the second episode of Food Investigators, Dr Renee Lim and Joe Avati put the kebab in rehab. They'll be finding out why one of Australia's favourite snacks might not be as bad for you as you think.

On Food Investigators tonight, Dr Renee Lim researches ice-cream - why does it now have so many ingredients, what are they and why are they necessary. She'll also be looking at how much Australia is eating - is four serves a week too much for our nation's health?

The Heptinstall family spend a week eating like great grandma's family in the 1940s. What can we learn in these tough times about how mum, dad and the kids coming together for real family meals makes a real difference? We also investigate whether chicken soup has curative properties, and reveal how every time you step into a major super-market you are being taken on a carefully planned psychological ride designed to mess with your mind and stimulate your senses.

From domestic kitchens to high tech factories, from farmers markets to supermarkets, Dr Renee Lim will be out and about finding exactly what Australians are eating. Assisted by food scientist Joe Avati and a team of top dieticians - Geraldine Georgeou and Hanan Saleh - the 'Food Investigators' use cutting edge science to take us through food debates, health scares and uncover exactly how our food is made.

On Episode Six of Food Investigators, Joe Avati and Food Investigator dietitian, Hanan Saleh, come up with the definitive answer to the question of what is the most nutritious seafood of them all.