Couple of things they may have omitted. Sugar is bad, but it isn’t the main problem. The main problem is fructose. Glucose converts in an entirely different way from fructose.
Sugar is more expensive than High Fructose Corn Syrup. So HFCS is used in many processed foods instead of sugar. It is also used in low fat foods to enhance taste. Fructose converts at the cellular level in a different way from other sugars.
We eat way too much sugar, I have recently cut sugar out not entirely but I have stopped putting it in coffee etc. But we also get tons of HFCS without even knowing. It is in all kinds of processed foods. To the extent we eat sugar, we should try to eat fiber at the same time. Add fiber tablets or add Metamucil a couple times a day if possible. Fiber has been stripped from much of our processed foods because Fiber takes longer to cook, spoils easily, and makes food hard to store and ship around the world. But if you look in nature, everywhere there is sugar, it comes with fiber. Even sugar cane is mostly fiber. Fruits have lots of fiber with the sugar. So if you eat sugar, eat fiber.
There is a great 1 hour video online that explains all this. Best to avoid as much sugar as possible but to the extent sugar is eaten, add fiber and add water if you can.
This video, about 1 hour, is a great explanation of how it all works in the body.
http://www.youtube.com/watch?v=dBnniua6-oM
Unfortunately, Lustig doesn't understand how it all works in the body. And that's quite an indictment against someone who professes to understand biochemistry like Lustig does.
First of all, Lustig blames fructose for just about every health problem society faces, but offers nothing in the way of legitimate scientific evidence to support his claims. He sounds like he knows what he's talking about. He doesn't. Early in your video, Lustig claims that alcohol is a carbohydrate. It isn't. He also claims that alcohol and fructose are metabolized in the same manner. That's a bizarre statement coming from anyone who claims to understand biochemistry. Lustig also claims that fructose is a toxin. Wrong again. The liver easily converts fructose to glucose just like it has being doing for humans for thousands of years.
Lustig has an agenda. I don't know what that agenda is, but he sure doesn't sound like a guy who knows what he's talking about. He doesn't deserve the credibility so many are eager to assign to him.