John Oliver has no idea what he is talking about when it comes to sugar.
"When we talk about increasing the metabolic rate, and the benefits it produces, we are comparing the rate of metabolism in the presence of thyroid, sugar, salt, and adequate protein to the "normal" diet, containing smaller amounts of those "stimulating" substances..." Raymond Peat, PhD
Carbohydrates are misunderstood.
"And just eating what you would consider the most delicious foods will secrete juices to help digest faster. So enjoy your food." Raymond Peat, PhD, Weight Gain, KMUD Herb Doctors, (2013)