weight and potatoes

Now a New England Journal of Medicine article says consumption of potatoes can lead to weight gains in adults!  Just what a struggling industry needs.  The fact that generations of Irishmen were raised on potatoes, milk and a little butter and didn't seem to suffer from obesity doesn't seem to matter.  According to the authors it does not matter what toppings people put on the spuds.  Somehow, I can't imagine people eating plain baked or boiled potatoes.