Start here: The history and science of diet

This is perhaps one of the most relevant and important documentaries to date. It goes into depth about the history of dietary recommendations and what impact it has had on our society. It also covers the science of low carbohydrate interventions and compares it to the SAD (Standard American Diet) using CGM's (continues glucose monitors). This is a very important illustration and proves beyond a shadow of a doubt that low carb interventions may be very useful for people with metabolic disorders due to better glycaemic control and hormone balance.