That Sugar Film is a feature length 2014 documentary directed by and starring Damon Gameau, it charts one mans journey to discover the truth about sugar. He adopts an experimental high sugar diet and measures the effects on his previously healthy body, and he does so whilst only consuming foods that are commonly perceived to be healthy. Gameau’s diet was the equivalent of 40 teaspoons of sugar per day. He gained weight, had much less energy, and developed fatty liver disease.
Featuring in the film are nutrition experts and medical professionals who explain what the sugar does to the body and how and why it has caused such negative effects on his body. After the experiment he returned to his normal diet and the ill effects are quickly reversed. Various celebrities also feature in the film including Stephen Fry and Hugh Jackman. Also worth a watch is the 2015 BBC documentary The Truth About Sugar.