As a nicotine addicted person, currently on recovery (but very aware of the lifelong fight that it is for me), and as a LCHF dieter, to me the relation is very clear. In my case, sugar has the same addictive effects than nicotine, and apparently, it has as most or even worst malign effects.
This is not to say that everyone should follow a LCHF diet, or that it will work for everyone. I do think that if you keep your carbs under 100g daily, and they are low profile insulin type, you should be good and safe. But for me, as an addicted person, if I deviate from 15g is very easy to get into a slippery slope and the next thing I know I am eating donuts and flurries. If I smoke a cigarette on a night out, the next thing I know I am smoking a pack daily or more.
The thing is, as with tobacco before, the sugar industry (which is probably the 90% of volume of the whole food industry world wide) has gone ways and beyond to hook us to their products and to cover the negative effects. Too many people is addicted to High Carbs without even knowing it.
I hope this studies get more and more attention in the mainstream media and many more people could at least review their lifestyle with more information and asses what is best for each of them.