yeah, i should have said in high quantities, but I was just paraphrasing the video. The point was, in the video, he did not say it was just fructose, glucose can also be a problem.

It can be a problem if you're type I diabetic or are obese, both of which result in impaired insulin sensitivity.

Otherwise, you can quite healthily gorge on starch and sugars and your tissues will happily mop up the glucose and fructose into glycogen. And then if necessary into fat, but lipogensis from sugars is surprisingly inefficient and glycogen capacity is more than you probably think.