If Lustig is right, then our excessive consumption of sugar is the primary reason that the numbers of obese and diabetic Americans have skyrocketed in the past 30 years. But his argument implies more than that. If Lustig is right, it would mean that sugar is also the likely dietary cause of several other chronic ailments widely considered to be diseases of Western lifestyles -- heart disease, hypertension and many common cancers among them.

via Is Sugar Toxic? - NYTimes.com.

UPDATE (same day): a good followup: http://justoneminute.typepad.com/main/2011/04/now-sugar-causes-cancer.html